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

### Instruction:
There are 21 cherry tomatoes on the tomato plant.  2 birds eat one-third of the tomatoes.  How many are still left on the tomato plant?

### Response:
 Ndege hula nyanya hizi: 21 / 3 = <<21/3=7>>7 nyanya.
Kuna nyanya hizi zilizobaki kwenye mmea: 21 - 7 = <<21-7=14>>14 nyanya.