There is a rectangle with a width of 4 centimeters (cm) and a length of 8 centimeters (cm). What is the value of the perimeter of the rectangle subtracted by 4?
4 8 [OP_ADD] 2 [OP_MUL] 4 [OP_SUB]
var_a = 4
var_b = 8
var_c = var_a + var_b
var_d = 2
var_e = var_c * var_d
var_f = 4
var_g = var_e - var_f
print(int(var_g))