A square is formed by placing several marbles of the same size without gaps so that each side is filled with 8 marbles. How many more marbles do you need to place marbles around this square to enclose it again?
8 4 [OP_MUL] 4 [OP_ADD]
var_a = 8
var_b = 4
var_c = var_a * var_b
var_d = 4
var_e = var_c + var_d
print(int(var_e))