Can You Knit Numbers How Many Issues Will It Take To Knit The Throw In The Art Of Knitting Magazine?

How many issues will it take to knit the throw in the art of knitting magazine? - can you knit numbers

Weaving The magazine gives a ball of knitting wool is 15cm by 15cm square weave throw / blanket (to cover a double bed seems). I have 27 tracks (so about 27 seats) How many numbers do you do this in order to build a shed? Thank you.