Fill in the numbers according to the law: 3, 5, 7, 11, 17, 27, how much.
按规律填数：3、5、7、11、17、27、多少．
<gadget id="calculator">27 - 1</gadget>
<output>26</output>

<gadget id="calculator">17 + 26</gadget>
<output>43</output>

<result>43</result>