just plus 1 for every 8 row

[yamapinews]

May i know there is any formula can let me roll down for adding 1 after every 8 row in column A like this

1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
3

 

[footoo]

Assuming you're starting in A2 :

=INT((ROW(A2)-ROW(A$2))/8)+1