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

### Instruction:
On a construction site, the Laker cement factory provided 500 bags of cement sold to Mr. Zander at $10 per bag. Mr. Zander also received twenty lorries of construction sand, each carrying 10 tons of sand, sold at $40 per ton. How much money did Mr. Zander pay for these construction materials?

### Response:
 Kwa kuwa gharama ya kila mfuko wa saruji ni $10, kwa mifuko 500, Bwana Zander alilipa 500*$10 = $<<500*10=5000>>5000
Kwa malori ishirini ya mchanga, kila moja likibeba tani 10 za mchanga, uzito jumla ni 20*10 = <<20*10=200>>200 tani.
Kwa kuwa gharama ya kila tani ya mchanga ni $40, Bwana Zander alilipa $40*200 = $<<40*200=8000>>8000 kwa mchanga uliokabidhiwa kwenye eneo lake la ujenzi.
Jumla, Bwana Zander alilipa $8000+$5000 = $<<8000+5000=13000>>13000 kwa vifaa vyote vya ujenzi vilivyokabidhiwa.