To compute this product, first you have to convert the mixed numbers into fractions, as follows:
[tex]3\frac{1}{3}\text{ = }\frac{3\cdot3+1}{3}=\frac{10}{3}[/tex][tex]8\frac{7}{10}=\frac{8\cdot10+7}{10}=\frac{87}{10}[/tex]Replacing into the multiplication:
[tex]\frac{10}{3}\cdot\frac{87}{10}=\frac{87}{3}=29[/tex]