@SirJB7
sorry to say but i think a little mistake done by you...
your formula is '=B$6*IF(MOD(COLUMN(B$6)-1,$B$1),1+$B$2,1)'
where u have missed "=0"
the formula must be "=B$6*IF(MOD(COLUMN(B$6)-1,$B$1)=0,1+$B$2,1)"
may be i am wrong, if so then sorry..
regards
sdey73