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

### Instruction:
It takes 3 ounces of wax to detail Kellan’s car and 4 ounces to detail his SUV. He bought an 11-ounce bottle of vehicle wax, but spilled 2 ounces before using it. How many ounces does he have left after waxing his car and SUV?

### Response:
 Kellan alitumia unga wa 3 + 4 = <<3+4=7>>7 kwa ajili ya gari lake na SUV yake.
Kwa kuwa alimwaga unga wa 2, ana unga wa 11 - 2 - 7 = <<11-2-7=2>>2 uliobaki.