Are you tired of taking out a scrap of paper every time you need to figure out the increases for a sweater when they say "increase 15 sts evenly"? Use the below website to help you come up with the easiest and ballanced increases and decreases for your knitting.
This site has calculators for just about anything. I used it for hats - yes, I can now change a pattern and figure out what the decrease pattern will be without a math major.
Someone wrote the code for us!