What is the version of the following sentence with correct punctuation?

Right front piece and now continue in moss st with 3 garter sts each side until piece measures 232425262728 cm Divide the piece in 2 and work holes for belt as follows
Right front piece: ... and now continue in moss st with 3 garter sts each side until piece measures 23-24-25-26-27-28 cm. Divide the piece in 2 and work holes for belt as follows: