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

### Instruction:
One afternoon, Rachelle, Gretchen and Rocky threw pennies into the fountain and made wishes.  Rachelle threw 180 pennies into the fountain.  Gretchen threw half as many pennies into the fountain as Rachelle and Rocky threw in one-third as many pennies as Gretchen.  What was the total number of pennies thrown into the fountain by the three of them?

### Response:
 Nusu ya noti 180 ni noti 180/2=90.
Theluthi moja ya noti 90 ni noti 90/3=30.
Hivyo, jumla ya noti zilirushwa na wote watatu ni noti (180+90+30)=300.