There are two piles of chess pieces, the first pile has 67 pieces, and the second pile has 53 pieces. To make the number of chess pieces in the first pile twice that of the second pile, how many pieces must be taken from the second pile and put into the first pile? heap?
有两堆棋子，第一堆有67枚，第二堆有53枚，要使第一堆的棋子数是第二堆的2倍，必须从第二堆中拿出多少枚棋子放入第一堆？
<gadget id="calculator">67 + 53</gadget>
<output>120</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<gadget id="calculator">53 - 40</gadget>
<output>13</output>

<result>13</result>