You are going to use all of the 30 centimeters (cm) of wire to make one rectangular shape. If the short side of the rectangle is 7 centimeters (cm), how many centimeters (cm) should the long side be?
30 2 [OP_DIV] 7 [OP_SUB]
var_a = 30
var_b = 2
var_c = var_a / var_b
var_d = 7
var_e = var_c - var_d
print(int(var_e))