The sum of the lengths of the four sides of a rectangle with a width of 20 cm (cm) is equal to the perimeter of a regular pentagon with a side length of 10 cm (cm). Find out what the length of this rectangle is.
10 5 [OP_MUL] 2 [OP_DIV] 20 [OP_SUB]
var_a = 10
var_b = 5
var_c = var_a * var_b
var_d = 2
var_e = var_c / var_d
var_f = 20
var_g = var_e - var_f
print(int(var_g))