Pascal's triangle up to the 5th iteration is

This tells us

so the second term in the expansion is

The one that is like this:^
170,000 square kilometers, divide by 10, or take off a 0
I would show you the picture with the work but I am on my computer because I am charging my phone.. So, I will just show the work
15% =

which gives you the whole quality of the number of 200