(5/6) of a number is (3/5) of 100, what is this number?
一个数的(5/6)是100的(3/5)，这个数是多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) / (5/6)</gadget>
<output>18/25 = around 0.72</output>

<gadget id="calculator">100 * (18/25)</gadget>
<output>72</output>

<result>72</result>