I have a big text file and I would like to extract only numbers that are after certain phrases/words.

There are dozens lines in this huge text file in the following format: 

> 
> Best CV Model for car: 15778 is order:2 threshold: 0 with AUC of :
>  0.7185 gene aau\_roc: 0.466281
> 
> 
> 

One solution is to just look at number after "for car: X", "is order: X", "threshold: X", "Y gene aau\_roc: X" !

At the end I would like to have 15778, 2, 0, 0.7185, 0.466281 for each line.