There are 2016 circular holes on the circumference, numbered clockwise. A chess piece starts from the No. 1 round hole, and jumps every 3 round holes in a clockwise direction, and jumps to the fifth round hole for the first time, ..., repeating and jumping down without interruption. Then, how many round holes are there in total that this chess piece can never jump to.
圆周上有2016个圆孔，顺时针编号．一枚棋子从第1号圆孔开始，依照顺时针方向每隔3个圆孔就跳一次，第一次跳到第5个圆孔，…，周而复始，不间断地跳下去．那么，共有多少个圆孔这枚棋子永远也不可能跳到．
<gadget id="calculator">2_016 / 4</gadget>
<output>504</output>

<gadget id="calculator">2_016 - 504</gadget>
<output>1_512</output>

<result>1_512</result>