There were 82 people on the train. A few of these got off, and 17 more got on, making the total 73 people. How many people got off 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))