4 kg of raw paper can be produced from 5 kg of waste paper. There are 20 students in the nature group, and each person collects 2 kg of waste paper on average. How many kg of recycled paper can be produced from the waste paper collected by the students in the nature group?
用5千克废纸可制造4千克生纸，自然小组有20名同学、平均每人收集废纸2千克，自然小组的同学收集的废纸可制造再生纸多少千克？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">20 * (2/5) * 4</gadget>
<output>32</output>

<result>32</result>