1/660 is in its simplest form.
1/8
6/60 = 1/10
1/4 is in its simplest form.
1 over 11 is already in simplest form.
1/18 is in its simplest form.
1/300 is in its simplest form.
1/6 is in its simplest form.
1/8 is in its simplest form.
1/8 is in its simplest form.
1/32 is in its simplest form.
1/64 is in its simplest form.
1/20 is in its simplest form.