The rule of $\text{'}72\text{'}$ is used to quickly approximate how rapidly an investment, at a fixed interest rate, will double. A more accurate version of the rule uses $72+($rate $-8)/3$ divided by the rate. Write a program to display the number of years to double an investment at $6\mathrm{.}25\%.$ Place the interest rate in the variable i$,$ your calculation in the variable y$,$ and print the result.