(5/6) of a number is (11/20), find this number. What is the correct column
一个数的(5/6)是(11/20)，求这个数．正确的列式是多少
<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(11/20) / (5/6)</gadget>
<output>33/50 = around 0.66</output>

<result>33/50 = around 0.66</result>