A ring with a radius of 15 centimeters (cm) has a circumference of 90 centimeters (cm). How many times is the ring's circumference longer than the ring's diameter?
90 15 2 [OP_MUL] [OP_DIV]
var_a = 90
var_b = 15
var_c = 2
var_d = var_b * var_c
var_e = var_a / var_d
print(int(var_e))