You need to multiply a number by 3 and add 49. But you subtract 3 and add 49 mistakenly and get 66. Find the difference between the correctly calculated value and the incorrectly calculated value.
66 49 [OP_SUB] 3 [OP_ADD] 3 [OP_MUL] 49 [OP_ADD] 66 [OP_SUB]
var_a = 66
var_b = 49
var_c = var_a - var_b
var_d = 3
var_e = var_c + var_d
var_f = 3
var_g = var_e * var_f
var_h = 49
var_i = var_g + var_h
var_j = 66
var_k = var_i - var_j
print(int(var_k))