Hi,
I used mod function to get remainder for 246.
=IF($M2<>0,IF($M2>60,$M2+IF(MOD($M2-60,6)>0,6,0),60),0)
I used above formula in column N.
Column M has formula too.
If M2 has bigger than 60, then minus 60, and then divide by 6.
IF remainder exist, then add 6, or add 0.
M2 was 246, and N2...