A batch of chemical fertilizer is 200 kg, 20% is used for the first time, and the remaining 20% is used for the second time, how many kg is used for the second time?
一批化肥200千克，第一次用去20%，第二次用去剩下的20%，第二次用去多少千克？
<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">200 * (4/5) * (1/5)</gadget>
<output>32</output>

<result>32</result>