1 and 1 / 14 + 3.9 + 3 and 2 / 7 + 5.1

1 and 1 / 14 + 3.9 + 3 and 2 / 7 + 5.1

1 and 1 / 14 + 3.9 + 3 and 2 / 7 + 5.1
=1 and 1 / 14 + 3 and 2 / 7 + (3.9 + 5.1)
=4 + 5 / 14 + 9
=13 and 5 / 14