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

### Instruction:
 乔希去了购物中心。他买了9张电影票和4本书。他还买了6张CD。每张电影票5美元，每本书4美元，每张CD3美元。乔希总共花了多少钱？


### Response:
 电影票的费用是9 × $5 = $<<9*5=45>>45。
书的费用是4 × $4 = $<<4*4=16>>16。
CD的费用是6 × $3 = $<<6*3=18>>18。
乔希总共花了$45 + $16 + $18 = $<<45+16+18=79>>79。