The Academic Affairs Office bought a pack of white paper and planned to use 25 sheets per day, which can be used for 24 days. Due to paying attention to saving paper, I actually only used 20 sheets a day. How many more days were actually used than planned?
教务处买进一包白纸，计划每天用25张，可以用24天．由于注意了节约用纸，实际每天只用了20张，实际比计划多用多少天？
<gadget id="calculator">24 / 20</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">25 * (6/5)</gadget>
<output>30</output>

<gadget id="calculator">30 - 24</gadget>
<output>6</output>

<result>6</result>