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

### Instruction:
 Becky ana mikufu 50 katika mkusanyiko wake wa vito. Mikufu 3 ina vito vilivyovunjika, hivyo anakusanya vito visivyo vunjika kwa ajili ya kutengeneza na kutupa sehemu nyingine za mikufu 3. Becky ananunua mikufu 5 mpya wiki hiyo. Anachagua kumpa marafiki zake mikufu 15 ya zamani kama zawadi. Mikufu mingapi anamiliki sasa?


### Response:
 Becky anaanza na mikufu 50 kisha anatupa 3, 50 - 3 = <<50-3=47>>47 mikufu.
Becky ananunua mikufu 5 mpya wiki hiyo, 47 + 5 = <<47+5=52>>52 mikufu.
Anatoa mikufu 17 kama zawadi kwa marafiki zake, 52 - 15 = <<37=37>>37 mikufu Becky anamiliki sasa.