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

### Instruction:
 Mama ya Joe alimpa $56 ili aende dukani. Joe alinunua madaftari 7 na vitabu 2. Kila daftari lina gharama ya $4 na kila kitabu lina gharama ya $7. Joe anabakiwa na pesa kiasi gani?


### Response:
 Joe alitumia 7*4+2*7=<<7*4+2*7=38>>38 dola.
Joe anabakiwa na 56-38=<<56-38=18>>18 dola.