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

### Instruction:
Michael is stuck in an elevator that is slowly moving to the bottom floor. The elevator needs to move down 20 floors to reach the bottom. It takes 15 minutes for the elevator to travel down the first half of the floors. The elevator then takes 5 minutes per floor to travel down the next 5 floors. It then takes 16 minutes per floor for the elevator to finish traveling down the final 5 floors. In hours, how long did it take for the elevator to reach the bottom?

### Response:
 Kwa sakafu 5, inachukua lifti dakika 5 * 5 dakika kwa sakafu = <<5*5=25>>25 dakika kushuka.
Kwa sakafu 5 za mwisho, inachukua lifti dakika 5 * 16 dakika kwa sakafu = <<5*16=80>>80 dakika kushuka.
Kwa kuwa inachukua dakika 15 kushuka nusu ya kwanza ya sakafu, na dakika 25, 80, na 15 kushuka sakafu tatu zilizobaki, inachukua dakika 15 + 25 + 80 = <<15+25+80=120>>120 dakika kushuka chini.
Kwa kuwa kuna dakika 60 katika saa, inachukua dakika 120 / dakika 60 kwa saa = <<120/60=2>>2 saa lifti kushuka chini.