(9/10) of a number is 270, what is (3/4) of this number.
一个数的(9/10)是270，这个数的(3/4)是多少．
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">270 / (9/10)</gadget>
<output>300</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">300 * (3/4)</gadget>
<output>225</output>

<result>225</result>