There are 80 apple trees in the orchard, and 20% fewer cherry trees than apple trees. How many cherry trees are there in the orchard?
果园里有苹果树80棵，樱桃树比苹果树少20%，果园里有樱桃树多少棵？
<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>