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

### Instruction:
 James anataka kujenga ngazi ili kupanda mti mrefu sana. Kila rung ya ngazi ina urefu wa inchi 18 na ziko umbali wa inchi 6. Ikiwa anahitaji kupanda miguu 50, urefu wa mbao atahitaji kwa rung ni miguu mingapi?


### Response:
 Kila rungu ni inchi 18. Kuna inchi 12 katika mguu, hivyo kila rungu ni 18 / 12 = <<18/12=3/2>>3/2 miguu.
Anahitaji kupanda miguu 50, hivyo anahitaji rungu (50/6) = <<50/6=25/3>>25/3.
Kila rungu ni 3/2 miguu, hivyo urefu jumla wa mbao anahitaji ni (25/3) rungu x (3/2) miguu/rungu = <<25/3*3/2=25/2=12.5>>12.5 miguu.