58 people got off at the train's first stop and 37 got on at the next station. If there were 123 people on the train at first, how many people are still left?
123 58 [OP_SUB] 37 [OP_ADD]
var_a = 123
var_b = 58
var_c = var_a - var_b
var_d = 37
var_e = var_c + var_d
print(int(var_e))