Can someone plzzz helpp meee rn

If 1 km = 0.621 miles, how many miles are in a centimeter

How do you multiply a mixed fraction by a regular fraction

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