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

### Instruction:
Papi Calot prepared his garden to plant potatoes. He planned to plant 7 rows of 18 plants each. But he still has a bit of room left, so he’s thinking about adding 15 additional potato plants. How many plants does Papi Calot have to buy?

### Response:
 Kwanza, hebu tuhesabu idadi ya mimea ambayo Papi alikuwa ameipanga: safu 7 * mimea 18/safu = <<7*18=126>>126 mimea
Sasa hebu tuongeze mimea mingine: mimea 15 + mimea 126 = <<15+126=141>>141 mimea
Hivyo, Papi anapaswa kununua mimea 141.