A box of apples weighed 9 kilograms (kg). After removing half of the apples, I weighed it again and it was 5 kilograms (kg). If each apple is the same size and weight, how many kilograms (kg) does only one box except apples weigh?
9 9 5 [OP_SUB] 2 [OP_MUL] [OP_SUB]
var_a = 9
var_b = 9
var_c = 5
var_d = var_b - var_c
var_e = 2
var_f = var_d * var_e
var_g = var_a - var_f
print(int(var_g))