How to increase 20 stitches evenly in the next row by: Ratchadawan
You can divide 146 by 20 = 7.3 to get an estimate of how often you need to work the increases. In this case you can increase a stitch every 7th st and you will gain 20 sts amost evenly. Usually, I start my first increase just about half of the what I have to do. For example, I would increase my first stitch about the 3rd of 4th sts if I have to do it every 7th. So that I don't have my last increase at the end of the row.
Thank you for your question and hope my advice helps your sister.