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

### Instruction:
One pair of pants requires 8.5 feet of fabric. Nguyen needs to make 7 pairs of pants for the wedding. He has 3.5 yards of fabric. How many feet of fabric does Nguyen still need for the pants?

### Response:
 Rinda = 8.5 * 7 = <<8.5*7=59.5>>59.5 futi
3.5 yardi = 10.5 futi
59.5 - 10.5 = 49 futi
Rinda bado inahitaji futi 49 za kitambaa.