Donghyeon's ranch has bulls and black cows. Bulls and black cows both eat 3 barrels of feed. To feed all these cows, Donghyun bought 8 bundles of 15 and 60 individual feeds. If the feeds are just the right amount, and there are 52 bulls, how many black cows are there?
15 8 [OP_MUL] 60 [OP_ADD] 3 [OP_DIV] 52 [OP_SUB]
var_a = 15
var_b = 8
var_c = var_a * var_b
var_d = 60
var_e = var_c + var_d
var_f = 3
var_g = var_e / var_f
var_h = 52
var_i = var_g - var_h
print(int(var_i))