(5/9) of a number is 15, what is (7/3) of this number.
一个数的(5/9)是15，这个数的(7/3)是多少．
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">15 / (5/9)</gadget>
<output>27</output>

<gadget id="calculator">7 / 3</gadget>
<output>7/3 = around 2.333333</output>

<gadget id="calculator">27 * (7/3)</gadget>
<output>63</output>

<result>63</result>