Need help with Hovercraft

Question

I’m getting 4/5 correct and can’t figure out why. If possible please help. My code is below, in Python. Thank you.

import math

sales = int(input())
months = int(math.ceil(sales/10))

cost = 21*months
if 3*sales > cost:
print("Profit")
elif 3*sales < cost:
print("Loss")
else:
print("Broke Even")

Answer 1

Fails for 0. Output should be "Loss", not "Broke Even".

Hint: Take a look at "months" value.