A fraction whose numerator is 12 greater than the denominator, converted to the simplest fraction is 1 (3/5). So what is the original score.
一个分数，分子比分母大12，化成最简分数后是1(3/5)．那么原来的分数是多少．
<gadget id="calculator">8 - 5</gadget>
<output>3</output>

<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">4 * 5</gadget>
<output>20</output>

<gadget id="calculator">8 / 20</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">4 * (2/5)</gadget>
<output>8/5 = around 1.6</output>

<result>8/5 = around 1.6</result>