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

### Instruction:
Samantha’s last name has three fewer letters than Bobbie’s last name. If Bobbie took two letters off her last name, she would have a last name twice the length of Jamie’s. Jamie’s full name is Jamie Grey. How many letters are in Samantha’s last name?

### Response:
 Mara mbili ya urefu wa jina la Jamie ni 2*4=<<2*4=8>>8.
Ikiwa Bobbie angeondoa herufi mbili kutoka kwenye jina lake la mwisho, angekuwa na jina la mwisho mara mbili ya urefu wa jina la Jamie, jumla ya herufi 8+2=<<8+2=10>>10.
Jina la mwisho la Samantha lina herufi tatu chache kuliko jina la mwisho la Bobbie, jumla ya herufi 10-3=<<10-3=7>>7 katika jina la mwisho la Samantha.