There were 2754 baseballs and 1938 ping pong balls in the shop. Among them, 1095 baseballs and a few ping-pong balls were sold, and a total of 3021 balls were left. How many ping-pong balls were sold?
2754 1938 [OP_ADD] 1095 [OP_SUB] 3021 [OP_SUB]
var_a = 2754
var_b = 1938
var_c = var_a + var_b
var_d = 1095
var_e = var_c - var_d
var_f = 3021
var_g = var_e - var_f
print(int(var_g))