In a greenhouse, the number of roses is 20% less than that of narcissus. There are 80 pots of narcissus. How many pots of roses are there?
一个花房里，玫瑰比水仙数量少20%，水仙有80盆，玫瑰有多少盆？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">80 * (4/5)</gadget>
<output>64</output>

<result>64</result>