The grain store needs to load a batch of rice. It turns out that each bag is 20 kg, and 400 bags should be packed. Now each bag is 25 kg, how many fewer bags than before?
粮店要装一批大米．原来每袋状20千克，要装400袋．现在每袋装25千克，比原来少装多少袋？
<gadget id="calculator">400 / 25</gadget>
<output>16</output>

<gadget id="calculator">20 * 16</gadget>
<output>320</output>

<gadget id="calculator">400 - 320</gadget>
<output>80</output>

<result>80</result>