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

### Instruction:
Reyna had 20 lamps with seven light bulbs in each lamp. If 1/4 of them have 2 burnt-out light bulbs each, how many light bulbs are working?

### Response:
 Jumla ya taa katika taa 20 ni 20*7 = <<20*7=140>>140
Ikiwa ¼ ya taa 20 zina taa zilizozimika, kuna ¼*20 = 5 taa zilizozimika
Kwa kuwa kila moja ya taa 5 zina taa 2 zilizozimika, idadi ya taa zilizozimika ni 5*2 = <<5*2=10>>10 taa
Idadi ya taa zinazofanya kazi ni 140 -10 = <<140-10=130>>130 taa