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

### Instruction:
 如果盒子里有四倍于蓝色蜡笔的红色蜡笔数量，并且有3支蓝色蜡笔。盒子里总共有多少支蜡笔？


### Response:
 4*3=<<4*3=12>>12支红色蜡笔。
12+3=<<12+3=15>>15支蜡笔总共。