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

### Instruction:
Santana has 7 brothers. 3 of them have birthdays in March, 1 of them has a birthday in October, 1 has a birthday in November, and another 2 of them were born in December. If Santana always buys each of her brothers a birthday present and a Christmas present, how many more presents does she have to buy in the second half of the year than the first half of the year?

### Response:
 Santana ana ndugu 1 + 1 + 2 = <<1+1+2=4>>4 wenye siku ya kuzaliwa katika nusu ya pili ya mwaka.
Ana ndugu 7 - 4 = <<7-4=3>>3 wenye siku ya kuzaliwa katika nusu ya kwanza ya mwaka.
Jumla, anapaswa kununua zawadi 1 + 4 + 7 = <<1+4+7=12>>12 katika nusu ya pili ya mwaka.
Anapaswa kununua zawadi 3 + 1 = <<3+1=4>>4 katika nusu ya kwanza ya mwaka.
Hivyo, anapaswa kununua zawadi 12 - 4 = <<12-4=8>>8 zaidi katika nusu ya pili ya mwaka.