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

### Instruction:
Roberta takes $158 with her on a shopping trip to the mall. She spends $45 on new shoes, $17 less on a new bag, and a quarter of the price of the bag for lunch. How much money does she have left after these purchases?

### Response:
 Begi la Roberta linagharimu $45 - $17 = $<<45-17=28>>28.
Roberta anatumia $28 / 4 = $<<28/4=7>>7 kwa chakula cha mchana.
Roberta anatumia jumla ya $45 + $28 + $7 = $<<45+28+7=80>>80.
Roberta anabakiwa na $158 - 80 = $<<158-80=78>>78.