If you change one of the five numbers, whose average is 8, to 8, the average becomes 9. What number was changed?
8 5 [OP_MUL] 9 5 [OP_MUL] 8 [OP_SUB] [OP_SUB]
var_a = 8
var_b = 5
var_c = var_a * var_b
var_d = 9
var_e = 5
var_f = var_d * var_e
var_g = 8
var_h = var_f - var_g
var_i = var_c - var_h
print(int(var_i))