A batch of soap sold 2/11 of the total number on the first day, and sold 8 more boxes on the second day than on the first day. At this time, the ratio of the number of boxes sold to the rest was 4:5. Yes but how many boxes?
一批肥皂，第一天卖了总数的(2/11)，第二天比第一天多卖8箱，这时卖了的箱数与剩下的比是4：5，这批肥皂一共有但多少箱？
<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">2 / 11</gadget>
<output>2/11 = around 0.181818</output>

<gadget id="calculator">(4/9) - (2/11) - (2/11)</gadget>
<output>8/99 = around 0.080808</output>

<gadget id="calculator">8 / (8/99)</gadget>
<output>99</output>

<result>99</result>