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

### Instruction:
Toby is counting goldfish in the local pond. He knows that only 25% of goldfish are at the surface and the rest are too deep below the surface to be able to see. If he counts 15 goldfish, how many are below the surface?

### Response:
 Kuna samaki 60 kwa sababu 15 / .25 = <<15/.25=60>>60
Asilimia 75 ya samaki wako chini ya uso kwa sababu 100 - 25 = <<100-25=75>>75
Kuna samaki 45 chini ya uso kwa sababu 60 x .75 = <<45=45>>45