if @ is a binary operation defined as the difference between an integer n and the product of n and 5 , then what is the largest positive integer n such that the outcome of the binary operation of n is less than 14 ?
import math
n0 = 5.0
n1 = 14.0
t0 = n0 - 1.0
t1 = n1 / t0
answer = math.floor(t1)
print(answer)