On a farm of 12 cows and 34 pigs, a few cows and three times as many pigs were sold on the market. When there are 30 remaining cows and pigs, how many cows sold?
12 34 [OP_ADD] 30 [OP_SUB] 1 3 [OP_ADD] [OP_DIV]
var_a = 12
var_b = 34
var_c = var_a + var_b
var_d = 30
var_e = var_c - var_d
var_f = 1
var_g = 3
var_h = var_f + var_g
var_i = var_e / var_h
print(int(var_i))