I need some help with these problems

Divide. reduce the answer to lowest terms.5 2/3 ÷ 3 1/9

Just tell me how to set up the equation.

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.