The fertilizer factory produces 1,550 bags of fertilizer in January (31 days), and 1,540 bags of fertilizer in February (28 days). How many more bags of fertilizer are produced per day in February than in January?
化肥厂一月份(31天)生产化肥1550袋，二月份(28天)生产化肥1540袋，二月份比一月份平均每天多生产化肥多少袋？
<gadget id="calculator">1_540 / 28</gadget>
<output>55</output>

<gadget id="calculator">1_550 / 31</gadget>
<output>50</output>

<gadget id="calculator">55 - 50</gadget>
<output>5</output>

<result>5</result>