Yoongi wanted to add 7 to a number but instead added 9 to get 30. Find the correct calculated value.
30 9 [OP_SUB] 7 [OP_ADD]
var_a = 30
var_b = 9
var_c = var_a - var_b
var_d = 7
var_e = var_c + var_d
print(int(var_e))