How do I solve ? I have to be able to solve it without a calculator :/

Select the two pairs of figures that are similar.

Pamela has a 30-year, 5.75% mortgage on her $250,000 home. she has been paying on it for 5 years, and has recently hit some financial trouble. if her lender agreed to lower the interest rate on her $231,905.47 balance to 5.5%, what will her new payment be for the remainder of the loan?

What is 0.368,0.380,0.365,and 0.383 in order from least to greatest