Please help on these.

3/3 of 12 =?

1/4 of 20=?

3/4 of 20 =?

2/4 of 20 =?

4/4 of 20 =?

1/5 of 35=?

3/5 of 35 =?

5/5 of 35 =?

2/5 of 35 =?

4/5 of 35 = ?

6/5 of 35 = ?