There is a pile of Go pieces, the number of white pieces is twice the number of black pieces, after taking away 96 white pieces, the number of black pieces is twice the number of white pieces, how many black pieces are there?
有一堆围棋子，白子的个数是黑子个数的2倍，拿走96个白子后，黑子的个数是白子个数的2倍，原来黑子有多少个．
<gadget id="calculator">96 * 2</gadget>
<output>192</output>

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">192 / 3</gadget>
<output>64</output>

<result>64</result>