(1/7) of the reciprocal of a number is equal to the smallest prime number, what is this number.
一个数的倒数的(1/7)等于最小的质数，这个数是多少．
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

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

<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<result>1/14 = around 0.071429</result>