There is a group of bees, 10% fly to the jasmine bushes, 80% stay at home, and one is looking for a small bee buzzing in the lotus. This small bee is attracted by the fragrance of the lotus. I can't fly out. Please tell me, how many bees are there in this colony?
有一群蜜蜂，10%飞向茉莉花丛中，80%留在家里，还有一只去寻找在荷花里嗡嗡叫的小蜜蜂，这只小蜜蜂被荷花的香味所吸引，傍晚时由于花瓣合拢，飞不出去了．请告诉我，这群蜜蜂共有多少只？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(1/10) + (4/5)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">2 / (1/10)</gadget>
<output>20</output>

<result>20</result>