Fill in the appropriate numbers in the brackets according to the rules in the following numbers: 17, 2, 14, 2, 11, 2, how much.
根据下列数中的规律在括号里填入合适的数：17、2、14、2、11、2、多少．
<gadget id="calculator">11 - 3</gadget>
<output>8</output>

<result>8</result>