input: Write a python function to calculate the total price given a unit price and quantity.
  assert calculate_total_price(2.99, 10) == 29.90
  assert calculate_total_price(8.99, 1) == 8.99
  assert calculate_total_price(0.99, 3) == 2.97
  assert calculate_total_price(3.50, 5) == 17.50
  assert calculate_total_price(4.50, 10) == 45.00
  assert calculate_total_price(5.00, 20) == 100.00
  assert calculate_total_price(9.75, 15) == 146.25
  assert calculate_total_price(7.50, 13) == 97.50
  assert calculate_total_price(3.00, 4) == 12.00
  assert calculate_total_price(10.00, 7) == 70.00
output: def calculate_total_price(unit_price, quantity):
      return round(unit_price * quantity, 2)