well you would do is
put the 12 outside of the house and the 1 inside of the house.
then you would start by 12/1 which you cant do so u would put a 0 and a decimal.
0.
then add another 0 onto the 1 so it would 10
once u do that do 12/10 which u cant do so it would be 0
0.0
then add another 0 onto that so it would be 100
then 12/100 is equal to 8
0.08
and that would be ur answer