The cafeteria shipped 1,000 kilograms of coal and planned to burn it for 40 days. 5 kilograms are saved per day due to improved stoves. How many days can this batch of coal burn now? What is the correct column
食堂运来1000千克煤，计划烧40天．由于改进炉灶，每天节省5千克．这批煤现在可以烧多少天？正确的列式为多少
<gadget id="calculator">1_000 / 40</gadget>
<output>25</output>

<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<gadget id="calculator">1_000 / 20</gadget>
<output>50</output>

<result>50</result>