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

### Instruction:
Nine adults went to a play with seven children. Adult tickets are $11 each and children's tickets are $7 each. How many dollars more did the adults' tickets cost in total than the children's tickets in total?

### Response:
 Tiketi za watu wazima zinagharimu dola 11 kila moja na kuna watu wazima 9, hivyo jumla ya gharama ya tiketi za watu wazima ni 9 * dola 11 = <<9*11=99>>99.
Tiketi za watoto zinagharimu dola 7 kila moja na kuna watoto 7, hivyo jumla ya gharama ya tiketi za watoto ni 7 * dola 7 = <<7*7=49>>49.
Tofauti ya gharama ni 99 - 49 = <<99-49=50>>50 dola.