input: Write a function to calculate the compound interest given the investment amount, rate of interest, and time period.
  def compoundInterest(investment_amount, rate_of_interest, time):
      compound_interest = investment_amount * (pow((1 + rate_of_interest / 100), time))
      return compound_interest
  
  assert compoundInterest(1000, 5, 5) == 1276.2815625
  assert compoundInterest(2000, 3, 10) == 2687.832726884654
  assert compoundInterest(500, 7, 3) == 612.5209999999999
  assert compoundInterest(1500, 4, 8) == 2095.3488128
output: def compoundInterest(investment_amount, rate_of_interest, time):
      compound_interest = investment_amount * (pow((1 + rate_of_interest / 100), time))
      return compound_interest