I bought 3 sets of top and bottom pajama sets and paid 21,000 won. If the top costs 300 won more than the bottom, what is the price of the bottom?
21000 3 [OP_DIV] 300 [OP_SUB] 2 [OP_DIV]
var_a = 21000
var_b = 3
var_c = var_a / var_b
var_d = 300
var_e = var_c - var_d
var_f = 2
var_g = var_e / var_f
print(int(var_g))