The school carries out environmental protection activities. There are 52 students in classes 5 and 3. If each person recycles 1.5 kg of waste paper on average, 1 kg of waste paper can produce 0.85 kg of recycled paper. How many kilograms of recycled paper can be produced from the waste paper recycled by Class 5 and Class 3?
学校开展环保活动，五3班共有52人，如果平均每人回收1.5千克废纸，1千克废纸可以生产0.85千克再生纸．五3班回收的废纸可生产多少千克再生纸？
<gadget id="calculator">0.85 * 1.5 * 52</gadget>
<output>66.3</output>

<result>66.3</result>