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

### Instruction:
Donny saves $15 on Monday, $28 on Tuesday and $13 on Wednesday. On Thursday he spends half of his total savings so far. How much did he spend?

### Response:
 Donny anaokoa jumla ya $15+$28+$13 = $<<15+28+13=56>>56 kwa siku zote 3
Anatumia nusu ya akiba yake yote ambayo ni $56*(1/2) = $<<56*1/2=28>>28