(2/7) of a number is 14, what is (1/2) of this number.
一个数的(2/7)是14，这个数的(1/2)是多少．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">14 / (2/7)</gadget>
<output>49</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">49 * (1/2)</gadget>
<output>49/2 = around 24.5</output>

<result>49/2 = around 24.5</result>