An orchard covers an area of 20 hectares, among which (3/5) are apple trees, how many hectares are apple trees planted?
一个果园占地20公顷，其中的(3/5)种的苹果树，苹果树种了多少公顷？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">20 * (3/5)</gadget>
<output>12</output>

<result>12</result>