Due to numerous questions in the comments, I provide clarifications :

the size of the scarf is 160 cm  *  30 cm

needles 4.5 mm, 150 g of yarn,

knitting density  14 stitches * 26 rows = 10*10 cm

the scarf is knitted along the wide side, starting with the points

cast on 345 stitches and knit according to the pattern for 40 rows, 209 stitches remain on the needles due to decreases in the process of knitting the pattern, then continue knitting with short rows :

Row 41 - knit 111 stitches knitwise, turn the work

Row 42 - 1 purl, 5 knit, 1 purl, 5 knit, 1 purl = 13 stitches, turn

Row 43  - 13 knit, *2 together knitwise, 5 knit = 19 stitches, turn

Row 44 - 1 purl, 5 knit, 1 purl, 5 knit,1 purl, 5 knit, 1 purl, 2 together knit, 4 knit, 1 purl = 25 stitches, turn