This year, 273 more students transferred from Seoul to Gyeonggi-do than vice versa. This year, there were 477 more students attending schools in Gyeonggi-do than students attending schools in Seoul. Find how many people were different last year.
477 273 [OP_ADD] 273 [OP_ADD]
var_a = 477
var_b = 273
var_c = var_a + var_b
var_d = 273
var_e = var_c + var_d
print(int(var_e))