Yoongi's age is 2 years younger than Hoseok's. The sum of the ages of Yoongi and Hoseok is 18 years old. How old is Yoongi?
18 2 [OP_SUB] 2 [OP_DIV]
var_a = 18
var_b = 2
var_c = var_a - var_b
var_d = 2
var_e = var_c / var_d
print(int(var_e))