what is 4/5 x 1 1/16

Change 1 1/16 to 17/16 and then multiply.

$${\frac{{\mathtt{17}}}{{\mathtt{16}}}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{4}}}{{\mathtt{5}}}}\right) = {\frac{{\mathtt{17}}}{{\mathtt{20}}}} = {\mathtt{0.85}}$$

Well, first you would make 1 1/16 into a inproper fraction(17/16), then do multiplacation.$$\left({\frac{{\mathtt{4}}}{{\mathtt{5}}}}\right){\mathtt{\,\times\,}}\left({\frac{{\mathtt{17}}}{{\mathtt{16}}}}\right) = {\frac{{\mathtt{17}}}{{\mathtt{20}}}} = {\mathtt{0.85}}$$