Evander Holyfield $($the champion boxer who had part of his ear bitten off by Mike Tyson$)$ made $$450$ million during his boxing career

but declared bankruptcy because of poor financial choices. His July interest at $16\%$ was $$310.$ What was Evander's principal at the

beginning of July?

Note: Use $360$ days a year. Do not round intermediate calculations. Round your final answer to the nearest whole dollar.