(2/3) of a number is 18, what is (2/9) of this number.
一个数的(2/3)是18，这个数的(2/9)是多少．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18 / (2/3)</gadget>
<output>27</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">27 * (2/9)</gadget>
<output>6</output>

<result>6</result>