I started by multiplying all the numbers like this-3x3,3x50,3x600,20x3,20x50,20x600,400x3,400x50,400x600
Then I added all my answers up to get the answer. And remember, keep your numbers neat or else you might do a miss calculation.
The hardest part of this was when you get the answer wrong and you try and correct it.
Next, I am going to try to learn extended division.
