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

### Instruction:
A YouTube video is 100 hours long. Lila decides to watch it at two times the average speed. Roger, her friend, also watch the same video at the average speed. If they both watched six of the same videos, what's the total number of hours they watched?

### Response:
 Ikiwa Lila aliiona video kwa kasi mara mbili ya kawaida, aliichukua masaa 100/2 = <<100/2=50>>50 kuiona.
Roger, rafiki yake, aliiona video kwa masaa 100 kwa kuwa aliiona kwa kasi ya kawaida.
Jumla ya masaa ya video waliyoiona wote ni 50+100 = <<50+100=150>>150 masaa.
Ikiwa wote wawili wameiona video sita sawa, jumla ya masaa waliyoiona ni 150*6 = <<150*6=900>>900 masaa.