What is a third of 2800

What is a third of 1/8?

In mathematics, one can often deduce things from simpler examples.

For example, you can ask yourself:
What is half (i.e. 1/2) of 4 apple pies

Sure, that's 2 apple pies. And now you think about how you actually calculated that. You probably calculated 4/2 or wrote differently:
1/2*4 = 2

To come back to your example, you now have 1/8 instead of half
--> 1/8*4

and you don't have 4 apple pies but only a third apple pies. But that doesn't change anything about your bill (except for the numbers).

1/8*1/3 = ?

Now of course you have to know the rules of fractions, otherwise it won't work. Therefore look at them again and learn by heart. It's not so much about understanding, you just have to have a lot to do with it.

In our case you multiply both numerators together and both denominators together:

(1*1)/(8*3) = 1/24

voila done