Add 6 to a number, multiply by 6, subtract 6, and divide by 6. The final result is 71. Find this number.
一个数加上6，再乘以6，然后减去6，再除以6，最后结果为71，求这个数．
<gadget id="calculator">71 * 6</gadget>
<output>426</output>

<gadget id="calculator">426 + 6</gadget>
<output>432</output>

<gadget id="calculator">432 / 6</gadget>
<output>72</output>

<gadget id="calculator">72 - 6</gadget>
<output>66</output>

<result>66</result>