The sum of the numerator and denominator of a fraction is 60, which is (3/7) after division. What is the original score?
有一个分数的分子与分母的和为60，约分后是(3/7)．原分数是多少？
<gadget id="calculator">3 + 7</gadget>
<output>10</output>

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

<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">60 * (7/10)</gadget>
<output>42</output>

<gadget id="calculator">(3/10) / 42</gadget>
<output>1/140 = around 0.007143</output>

<gadget id="calculator">60 * (1/140)</gadget>
<output>3/7 = around 0.428571</output>

<result>3/7 = around 0.428571</result>