There is a cost of money. When someone loans you money, they
expect to profit (maybe just by your goodwill). Notice that car
dealers and others who are financing what you buy will usually show
you the monthly payments, and avoid talking about the full cost
with interest. It would be helpful to calculate the monthly
payments given the amount loaned, the interest rate, and the number
of payments you are expected to make. In this assignment, you will
implement...