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

### Instruction:
For the school play, 40 rows of chairs were set up where there were 20 chairs in each row. If only 10 seats were not occupied, how many seats were taken?

### Response:
 Shule ilijipanga na viti 40 x 20 = <<40*20=800>>800.
Hivyo, viti 800 - 10 = <<800-10=790>>790 vilichukuliwa.