We have a number [tex]8.792[/tex].
To write it as a fraction first count the number of decimals and call it [tex]n[/tex] (which, in our case, has a value of 3). Multiply the number with [tex]10^n[/tex] to get [tex]8792[/tex]. Then divide this number by [tex]10^n[/tex] to get [tex]\frac{8792}{10^n}[/tex] from here you can either simplify (if the assignment says so, then the simplified fraction is [tex]\frac{1099}{125}[/tex]) or not.
Hope this helps.