There are a bunch of chess pieces (the total number is greater than 1), and one piece is left after dividing it into four equal parts. After taking three parts and the remaining one, divide the remaining chess pieces into four equal parts, and there is still one piece left, and then take it away Three pieces and the remaining one, after dividing the remaining chess pieces into quarters, there is still one left. It turns out that there are at least how many chess pieces.
有一堆棋子(总数大于1)，把它四等分后剩下一枚，拿去三份和剩下的一枚后，将剩下的棋子再四等分后还是剩一枚，再拿去三份和剩下的一枚，将剩下的棋子四等分后还是剩一枚．原来至少有多少枚棋子．
<gadget id="calculator">1 * 4</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">20 + 1</gadget>
<output>21</output>

<gadget id="calculator">21 * 4</gadget>
<output>84</output>

<gadget id="calculator">84 + 1</gadget>
<output>85</output>

<result>85</result>