I am working on the sides of a sleeve. The instructions say to increase 1 stitch and each end of the 11th and 0(0:0:7:12) foll 6 rows, then on 0(4;8:5:1) foll 8 rows, then on 8 (5:2::0:0)foll 10 rows, taking inc sts into pattern 57(61:65:69:73). I am working on the 1st number within the parentheses for my size. Where I am confused is the zeros, does this mean the amount of stitches i am to increase?

Anyone’s help will be appreciated.