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

### Instruction:
Sara sent letters to her friend in China every month. She sent 6 letters in January, 9 letters in February, and in March she sent triple the number of letters she sent in January. How many letters does Sara send?

### Response:
 Kwa kuwa Machi ina siku 31, Sara alituma barua 3 * 6 = <<3*6=18>>18 mwezi wa Machi.
Jumla ya barua alizotuma ni 6 + 9 + 18 = <<6+9+18=33>>33.