a) You are 30 years old and have already saved up $10,000 for your retirement. You determine that to retire comfortably you need $1.5 million by the time you retire, at the age of 66. How much do you need to save per month, starting today, if the average return on all your savings will be 6% per year? b) . Now fast forward to age 66 when you just retired with $1.5 million saved for your retirement. You plan to withdraw $80,000 a year at the beginning of each year and leave $1 million for your kids when you die. Assuming your savings can earn an average of 5% per year, how long (in years, rounded to the nearest whole number) can you afford to live after retirement?

answer using excel functions if possible