Some fruit boxes contain pears and apples. When these fruits were packed in 4 pieces, 12 bundles came out and 3 pieces remained. If there are 12 apples, how many pears are there?
12 4 [OP_MUL] 3 [OP_ADD] 12 [OP_SUB]
var_a = 12
var_b = 4
var_c = var_a * var_b
var_d = 3
var_e = var_c + var_d
var_f = 12
var_g = var_e - var_f
print(int(var_g))