There is a fraction, if you add 2 to the numerator, this fraction is equal to three-quarters; if you add 2 to the denominator, this fraction is equal to one-half. What is this score?
有个分数，如果分子加2，这个分数等于四分之三；如果分母加2，这个分数就等于二分之一．这个分数是多少？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) * 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">2 + (3/2)</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">(3/2) - 1</gadget>
<output>1/2 = around 0.5</output>

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

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

<gadget id="calculator">14 - 2</gadget>
<output>12</output>

<gadget id="calculator">(7/2) / (1/2) / 12</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>