15 students stand in a line. If Namjoon is the 7th person from the left, what about from the right side?
15 7 [OP_SUB] 1 [OP_ADD]
var_a = 15
var_b = 7
var_c = var_a - var_b
var_d = 1
var_e = var_c + var_d
print(int(var_e))