I have this code in HTML:

```
<label for="date">START DATE:
    <input id="date" name="date" type="number"> <span>days</span>
<label>

```

Now I want to make that if a user inputs `1` as a value in the `input` the `span` should change into the `day`, and if it has more than `1` day it should remain `days`. How can I make this with `*ngIf`?

Thanks.