There is a fraction. After dividing this fraction by (2/7), the sum of the numerator and denominator is 71. What is the original number?
有一个分数，用这个分数除以(2/7)后，分子与分母的和是71，原数是多少．
<gadget id="calculator">71 - 2</gadget>
<output>69</output>

<gadget id="calculator">69 / 7</gadget>
<output>69/7 = around 9.857143</output>

<result>69/7 = around 9.857143</result>