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

### Instruction:
 一个罐子里有9支蓝色钢笔，21支黑色钢笔和6支红色钢笔。先取出4支蓝色钢笔，然后再取出7支黑色钢笔。罐子里还剩下多少支钢笔？


### Response:
 罐子里还剩下5支蓝色钢笔。
罐子里还剩下14支黑色钢笔。
罐子里还剩下5+14+6 = <<5+14+6=25>>25支钢笔。