$($APR and EAIR$)$ Your local bank has offered you a mortgage of $$100,000.$ There are no points, no origination

how fees, and no extra initial costs $($meaning: you get the full $$100,000).$ The mortgage is to be paid back over $10$ years in monthly payments, and the bank charges $12\%$ annual interest computed monthly $(1\%,$ this rate is "stated" or APR$).$

a$.$ Calculate the monthly mortgage payments.

b$.$ What is the mortgage EAIR?