(2,5-1 1/3) * (4,6+2 1/3)

1)2 1/2-1 1/3=2 3/6-1 2/6=1 1/6
2)4 3/5+2 1/3=4 9/15+2 5/15=6 14/15
3)1 1/6*6 14/15=7/6*104/15=364/45=8 4/45