I am trying to clean a variable about income that comes from an historical database. I would like to **replace** all "£" for "pounds" but **placing it after the number**. For example "About £500 per annum" --> "About 500 pounds per annum".

I could easily do the first part with:

```
stringr::str_replace_all("About £500 per annum" ,"£", "pounds")
[1] "About pounds500 per annum"

```

But I have not been able to place it after the number, which would be important as other input cases might take the form:

"About 200 pounds 0s 0d",
"124.21.0", "124 acres let at £140 including a rent charge of £30"

Does anybody know elegant way to do it?