When the bucket containing 320 kilograms (kg) of water was weighed again after using half of the water, it. became 175 kilograms (kg). Find the weight of the empty bucket in kilograms (kg).
320 320 175 [OP_SUB] 2 [OP_MUL] [OP_SUB]
var_a = 320
var_b = 320
var_c = 175
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))