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

### Instruction:
At a certain bookstore, the best-selling book, "TOP," costs $8. The least-selling book, "ABC," costs $23. Thirteen "TOP" books and four "ABC" books were sold last week. What is the difference in the bookstore's earnings on these two books last week?

### Response:
 Kitabu kinachouzwa zaidi kimepata $8 * 13 = <<8*13=104>>104 dola
Kitabu kinachouzwa kidogo zaidi kimepata $23 * 4 = <<23*4=92>>92 dola
Tofauti katika mapato ni 104 - 92 = <<104-92=12>>12 dola