There are two circles A, B of different sizes. The radius of circle A is 4 times the radius of circle B. If the diameter of circle A is 80 centimeters (cm), what is the radius of circle B in centimeters (cm)?
80 4 [OP_DIV] 2 [OP_DIV]
var_a = 80
var_b = 4
var_c = var_a / var_b
var_d = 2
var_e = var_c / var_d
print(int(var_e))