There are some red beans and mung beans on the table. The number of mung beans is 11 times the number of red beans. Later, the mung beans began to grow sauvignon blanc, and 45 of them turned into red beans. At this time, there are as many red beans as mung beans, so how many red beans are there?
桌子上有一些红豆和绿豆，绿豆的颗数是红豆颗数的11倍，后来绿豆开始长相思，结果45颗变成了红豆，这时候红豆与绿豆一样多，那么原来有红豆多少颗．
<gadget id="calculator">11 - 1</gadget>
<output>10</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">45 * (1/5)</gadget>
<output>9</output>

<result>9</result>