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

### Instruction:
Bert, Ernie, and Peggy collect stamps.  Bert has four times as many stamps as Ernie, but Ernie has three times as many stamps as Peggy.  If Peggy currently has 75 stamps in her collection, how many stamps does she need to add to her collection to have a collection as large as Bert's collection?

### Response:
 Ikiwa Peggy ana stempu 75 na Ernie ana stempu mara tatu zaidi ya Peggy, basi Ernie ana stempu 3*75=<<75*3=225>>225.
Kwa kuwa Bert ana stempu mara nne zaidi ya Ernie, basi Bert ana stempu 4*225=<<4*225=900>>900.
Hivyo, Peggy anahitaji kuongeza stempu 900-75=<<900-75=825>>825 ili awe na mkusanyiko kama mkusanyiko wa Bert.