30% of a number is (27/2), what is this number?
一个数的30%是(27/2)，这个数是多少？
<gadget id="calculator">27 / 2</gadget>
<output>27/2 = around 13.5</output>

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

<gadget id="calculator">(27/2) / (3/10)</gadget>
<output>45</output>

<result>45</result>