You do 9x27=243 then take 2x31=62 add 243+62=305 then take 305 and subtract it from 28 305-28=277
so if i did it right you should get n=277
There will be 42 in each row with 2 left over
The length is 7 and there is no N
The answer is 30 hope it helps
43/12 can be
3 7/12
Hope this helps
