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

### Instruction:
 马克想给他妻子订一双上面绣有她名字首字母的拖鞋。这双拖鞋原价是50.00美元，现在打9折。每只鞋的绣花费用是5.50美元，运费是固定的10.00美元。这双拖鞋总共要花多少钱？


### Response:
 这双拖鞋打了9折。50.00美元的9折是50.00 * 0.10 = 5.00美元。所以，这双拖鞋现在的价格是50.00 - 5.00 = 45.00美元。每只鞋的绣花费用是5.50美元，一双鞋有两只，所以绣花费用是5.50 + 5.50 = 11.00美元。总共的费用是45.00 + 11.00 + 10.00 = 66.00美元。