A pile of black and white chess pieces, from which 15 white stones are removed, the ratio of the number of remaining black stones to the number of white stones is 2:1, and 45 black stones are removed from it, and the ratio of the number of remaining black stones to white stones is 1:5, then How many chess pieces are there in total?
一堆黑白棋子，从中取走了白子15粒，余下黑子数与白子数之比为2：1，此后又从中取走了黑子45粒，余下的黑子与白子数之比为1：5，那么这堆棋子原来共有多少粒？
<gadget id="calculator">2 * 5</gadget>
<output>10</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">45 / 9</gadget>
<output>5</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">25 + 10 + 5 + 45</gadget>
<output>85</output>

<result>85</result>