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

### Instruction:
 九个成年人和七个孩子去看戏。成年人的票价是每张11美元，孩子的票价是每张7美元。成年人的票总共比孩子的票多花了多少美元？


### Response:
 成年人支付了9*11 = <<9*11=99>>99美元
孩子支付了7*7 = <<7*7=49>>49美元
两者之间的差额是99-49 = <<99-49=50>>50美元