input: Write a python function to calculate the product of all numbers in a list.
  assert calculate_product([5, 4, 9, 10]) == 1800
  assert calculate_product([1, 2, 3, 4]) == 24
  assert calculate_product([7, 8, 9]) == 504
output: def calculate_product(numbers):
      product = 1
      for number in numbers:
          product *= number
      return product