Gyeongyeon gave 7 out of 20 cookies to his friends and received 5 more cookies from her friends. Find the number of cookies Gyeongyeon now has.
20 7 [OP_SUB] 5 [OP_ADD]
var_a = 20
var_b = 7
var_c = var_a - var_b
var_d = 5
var_e = var_c + var_d
print(int(var_e))