(8×1017)÷(2×103)Give your answer in standard form.

Abbey purchased a house using a fixed rate mortgage. the annual interest rate is 4.2% compounded monthly for 20 years. the mortgage amount is $235,000. what is the monthly payment on the mortgage? this isn't a multiple choice question have to show my work

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Evaluate the expression. (9 + 5)(3 + 2)0