17 more people got on the train with 82 people on it, and a few people got off. If 73 people were on the train, find how many people left the train.
82 17 [OP_ADD] 73 [OP_SUB]
var_a = 82
var_b = 17
var_c = var_a + var_b
var_d = 73
var_e = var_c - var_d
print(int(var_e))