There are white stones and black stones in one pile, and the number of white stones is twice that of black stones. Take out 3 black stones and 4 white stones each time. After several times, there is only 1 black stone and 22 white stones left. How many white stones are left.
有白子和黑子各一堆，白子的颗数是黑子的2倍．每次取出3颗黑子和4颗白子，若干次后，黑子还剩下1颗，白子还剩下22颗，原有白子多少颗．
<gadget id="calculator">22 - 2</gadget>
<output>20</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">40 + 22</gadget>
<output>62</output>

<result>62</result>