Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Andrew bought a big bag of balloons. The bag had 303 blue balloons and 453 purple balloons. If Andrew shares half of his balloons with his brother, how many balloons does he have left?

### Response:
 Andrew ana jumla ya maballuni 303 + 453 = <<303+453=756>>756.
Baada ya kumpa ndugu yake nusu yao, anabaki na maballuni 756 * 0.5 = <<756*0.5=378>>378.