Former President Donald Trump and New York Attorney General Letitia James, in separate media appearances, addressed the ruling Friday evening, trading barbs while reacting to the judgment.

Speaking from his Mar-a-Lago estate in Florida, Trump said he had to pay a fine for "having built a perfect company." Accusing both James and Judge Arthur Engoron of being politically motivated, Trump denied committing any fraud and said he plans to appeal.

Meanwhile, in New York, James lauded the ruling as a victory for all Americans and the principles of equal justice under the law -- saying "former presidents are no exception."

"The scale and scope of Donald Trump's fraud is staggering -- and so, too, is his ego and his belief that the rules don't apply to him," she said.

James also heralded Judge Engoron's penalties as effective remedies to "ensure this fraud cannot continue."

Based on Friday's decision, former President Trump and his co-defendants will likely owe $463.9 million based on their initial fine and the prejudgment interest imposed by the court, according to a representative for the New York attorney general.

Trump himself will likely owe $453.5 million, between his $354.86 million fine and $98.6 million in interest.

The amount of interest owed by the defendants is set to increase every day they do not pay the fines.

New York Attorney General Letitia James, whose office brought the civil fraud case against Donald Trump, described the ruling as a "tremendous victory for this state, this nation, and for everyone who believes that we all must play by the same rules -- even former presidents."

“When powerful people cheat to get better loans, it comes at the expense of honest and hardworking people," James said in a statement. "Everyday Americans cannot lie to a bank to get a mortgage to buy a home, and if they did, our government would throw the book at them. There simply cannot be different rules for different people."

The former president is "finally facing accountability for his lying, cheating, and staggering fraud," she said.

In addition to the fines imposed on Donald Trump and his co-defendants, the judge's decision leaves the Trump Organization in a constrained position to continue operating their New York-based businesses.

While Judge Engoron backtracked on his September summary judgment ruling -- vacating the part of his order that canceled their business certificates -- Donald Trump and his sons are temporarily unable to lead their namesake company. Trump faces a three-year ban on serving as the leader of a New York company, and his sons face two-year bans.

An independent monitor will continue to oversee the company's finances for at least three years, and the company needs to install a director of compliance.

Regarding the combined $364 million owed by the defendants, experts who ABC News spoke with believe it is unlikely any of them foot the bill immediately; instead, they can cover the fine with a bond while they appeal.

Donald Trump acknowledged during direct examination that he overvalued at least two properties in his statements of financial condition, though he broadly represented that the statements underestimated his total net worth.

"Did you ever think that the values were off in your statement of financial condition?" state attorney Kevin Wallace asked about the document at the center of the case, which the New York attorney general has alleged contained fraudulent valuations.

"Yes, on occasion. Both high and low," Trump said, appearing to surprise Wallace, who paused to allow Trump to continue his answer.

Compared to his sons, who largely testified that they deferred to accountants and lawyers, Trump portrayed himself as an experienced businessman who "was certainly more expert than anybody else" when it came to the value of his own properties.

Asked about properties like 40 Wall Street and a retail space near Trump Tower, the former president confidently used real estate shorthand to explain why he thought certain properties were undervalued. He also repeated that his brand value -- which was not included in his financial statement -- is worth billions.

"The most valuable asset was the brand value," Trump said. "I became president because of my brand."

However, Trump acknowledged that two properties -- his triplex apartment in Trump Tower and his Seven Springs estate in New York's Westchester County -- were overvalued and had to be adjusted in his financial statement.

"I thought the apartment was overvalued when I looked at it," Trump said, appearing to refer to a $200 million correction applied to his statement after Forbes magazine reported that he falsely stated the apartment was three times its actual size.

Asked about the change in the statement, Trump acknowledged the square footage mistake, which he blamed on a broker, while also claiming that the number was "not far off" from reality when you consider the square footage of Trump Tower's roof.

"It's a mistake … [but] there's a disclaimer clause so you don't have to get sued by the attorney general of New York," Trump said.

Trump made a similar admission about the $291 million valuation of Seven Springs.

"I thought it was too high and we lowered it," Trump said, though he could not provide specifics about the changed valuation.