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

### Instruction:
 弗雷迪比斯蒂芬妮小2岁。斯蒂芬妮比乔布大4倍。如果乔布是5岁，那么弗雷迪多大？


### Response:
 斯蒂芬妮：5 * 4 = <<5*4=20>>20岁
弗雷迪：20 - 2 = <<20-2=18>>18岁
弗雷迪18岁。