input: Write a function to calculate the new value after adding a percentage increase.
  assert calculate_new_value(25.22, 5) == 26.496
  assert calculate_new_value(100, 10) == 110.0
  assert calculate_new_value(50, 20) == 60.0
output: def calculate_new_value(original_value, percentage_increase):
      return original_value + (original_value * percentage_increase / 100)