There are several socks in the box, if you take 7 socks each time, there will be 6 socks left, if you take 9 socks each time, there will be a difference of 8 socks. How many socks are in the box.
箱子里有若干只袜子，如果每次取7只，则剩下6只，如果每次取9只，则差8只．箱子里多少只袜子．
<gadget id="calculator">6 + 8</gadget>
<output>14</output>

<gadget id="calculator">9 - 7</gadget>
<output>2</output>

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

<gadget id="calculator">7 * 7</gadget>
<output>49</output>

<gadget id="calculator">49 + 6</gadget>
<output>55</output>

<result>55</result>