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

### Instruction:
 Derek ana $40. Anatumia $14 kwa chakula cha mchana kwa ajili yake mwenyewe, $11 kwa chakula cha mchana kwa ajili ya baba yake, na $5 kwa chakula cha mchana zaidi kwa ajili yake mwenyewe. Ndugu yake Dave ana $50 na anatumia tu $7 kwa chakula cha mchana kwa ajili ya mama yake. Dave ana pesa ngapi zaidi kuliko Derek?


### Response:
 Derek ana 40 - 14 - 11 - 5 = $<<40-14-11-5=10>>10 zilizobaki
Dave ana 50 - 7 = $<<50-7=43>>43 zilizobaki.
Dave ana 43 - 10 = $33 zaidi zilizobaki kuliko Derek.