Question 852001
I created a visual image for you at google.

Here's the link,

https://lh5.googleusercontent.com/-Ed9FutxLO2E/UyFQsQustEI/AAAAAAAAAEI/jR0PMa4UZOE/w383-h577-no/math.jpg



Follow me on twitter and instagram @seutip

Thanks! Hope that helps!