Partly it might be due to needing "-10" at the end rather than -1 (I think I may have corrected it to -11 by mistake).
However, larger is the difference in how division works.
Python2: 3 / 2 => 1
Python3: 3 / 2 => 1.5
However, larger is the difference in how division works.
Python2: 3 / 2 => 1
Python3: 3 / 2 => 1.5
def f(a, b, c, d, e, f, g, h, i):
return a + int((13 * b * i + g * h * c) / (i * c)) + d + 12 * e - f - 11 - 10
EDIT: code formatting...