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

### Instruction:
Tabitha has 25 dollars. She gives her mom 8 dollars and invests half what is left in a money market. She spends some money on 5 items that costs 50 cents each. How much money does Tabitha have left?

### Response:
 Tabitha anabakiwa na dola 25-8 = <<25-8=17>>17 baada ya kumpa mama yake.
Tabitha anabakiwa na dola 17/2 = <<17/2=8.5>>8.5.
Gharama jumla ya vitu 5 ni 5*0.50 = <<5*0.50=2.5>>2.5 dola.
Tabitha anabakiwa na 8.5-2.5 = <<8.5-2.5=6>>6 dola.