Casting off

So i m currently knitting a sweater and i have reached the shoulder shaping and feel stuck! The pattern calls for Cast off 14 st beg of next 4 rows then 15 sts beg next 2 rows. Put rem 51 sts on st holder.
I currently have 110 sts on my needle and if i cast of 14 next 4 rows (14×4=56) and 15 next 2 (15×2=30) would give me 86 sts would leave 24 remaining not 51. Help!! :persevere: TIA!

Welcome to KnittingHelp!
Check that 110 is the correct number of stitches to have on the needle at this point in the pattern. Also check later in the pattern for the collar or neckband and see if 51sts is the correct number for sts on the holder.

If all that is correct, you could change the bind off to something like 14sts at the beginning of the next 2 rows and 15sts at the beg of the next 2 rows. That’ll leave you 52sts which is probably close enough.
Can you give us a link to the pattern or a pattern name please?