30% of a number is as large as 20% of (5/6), what is this number?
一个数的30%与(5/6)的20%一样大，这个数是多少．
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(1/5) / (3/10)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/6) * (2/3)</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>