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

### Instruction:
 埃德华多是一名教师。上周他教了3节课，而他的同事弗兰基教的课是埃德华多的两倍。埃德华多和弗兰基总共教了多少节课？


### Response:
 由于弗兰基教的课是埃德华多的两倍，弗兰基教了2 * 3 = <<2*3=6>>6节课。
总共，弗兰基和埃德华多教了6+3 = <<6+3=9>>9节课。