The area of a rectangle is found by multiplying its width by its length. What is the value of A if the surface area of a rectangle is 120 square centimeters  which is made by increasing the width by 3 centimeters (cm) and reducing the length by A centimeters (cm)  of a square whose side length is 12 centimeters (cm)?
12 120 12 3 [OP_ADD] [OP_DIV] [OP_SUB]
var_a = 12
var_b = 120
var_c = 12
var_d = 3
var_e = var_c + var_d
var_f = var_b / var_e
var_g = var_a - var_f
print(int(var_g))