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

### Instruction:
Yulia was able to net $44 in profit this week. Her lemonade stand made a gross revenue of $47 this week. She was also able to babysit and made $31. However, her lemonade stand is expensive to run because she needs to buy lemons, sugar, and sunscreen. How much did she spend to operate her lemonade stand, in dollars?

### Response:
 Mapato yake ya jumla yalikuwa $47 + $31 = $<<47+31=78>>78.
Ili kuhesabu gharama za uendeshaji au kiasi alichotumia kuendesha biashara yake ya limau, tunatoa faida yake ya jumla kutoka kwa mapato yake ya jumla ambayo ni $78 - $44 = $<<78-44=34>>34.