There are 196 Go pieces arranged in a 14*14 square. A and B take away all the pieces on each layer from the outermost layer in turn until they are all taken. How many more pieces did A take than B?
有196个围棋子摆成一个14*14的正方形，甲、乙两人依次从最外一层起取走每一层上的全部棋子直到取完为止，甲比乙多取了多少棋子？
<gadget id="calculator">3 * 8</gadget>
<output>24</output>

<gadget id="calculator">24 + 4</gadget>
<output>28</output>

<result>28</result>