You have a bank account which begins with P dollars (P>0) and has a nominal yearly interest rate (aka APR) of r. Notice that we didn't say "r percent" here so you should assume 0<r<1. Suppose your money is compounded several times per year, so that in reality you'll have more than P*(1+r) at the end of a year (the true rate of interest you're being paid is the APY). Write a function compoundInterestAmount(P,r,y,dt) which computes the amount of money you'll have after y years, where compounding happens once in each interval of length dt. Your function should return the integer part of the number it computes.