Ha ha - the calculator exploding is cracking me up!

No, no. . . NO!!! this is NOT A DEAL. This is a math problem I am trying to figure out for a course.

I’m just stuck on the formula and figured - why not go to those who are in the know on this forum?

I think I did write it wrong - it’s a $85,000 loan for payments of $8,273.59 per YEAR (oops!) for 30 years - obviously divide that by 12 to get amount for payment per month. What’s the interest rate?

Please, if someone could give me the formula, my calculator has not exploded yet and I can solve for it!