so_luong = int(input("Số lượng mua:" ))
don_gia = 15000
thanh_tien = so_luong * don_gia
print("Thành tiền:" + str(thanh_tien) + "đồng")
c29fbHVvbmcgPSBpbnQoaW5wdXQoIlPhu5EgbMaw4bujbmcgbXVhOiIgKSkKZG9uX2dpYSA9IDE1MDAwCnRoYW5oX3RpZW4gPSBzb19sdW9uZyAqIGRvbl9naWEKcHJpbnQoIlRow6BuaCB0aeG7gW46IiArIHN0cih0aGFuaF90aWVuKSArICLEkeG7k25nIik=