We have to divide 3/5 by 6. The picture above represents 3/5.
Drawing 5 vertical lines, we divide the whole block into 6 equal parts.
Now we have a total of 5*6 = 30 little squares. Dividing 3/5 into 6 equal parts we shade 3 out of 30 little squares. Then, 3/5 ÷ 6 = 3/30 = 1/10 (simplifying)