Without changing the value of the fraction, to make the ratio of the numerator and denominator of (1/14) 1:2, how much should be added to the numerator and denominator at the same time.
不改变分数的值，要使(1/14)的分子与分母的比是1：2，分子和分母要同时加上多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">14 / 1</gadget>
<output>14</output>

<gadget id="calculator">(1/2) * 14</gadget>
<output>7</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

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

<gadget id="calculator">6 / (1/2)</gadget>
<output>12</output>

<result>12</result>