There is a project plan to use 800 workers and finish within 100 days. Unexpectedly, from the start of work, the work was stopped due to an accident after 35 days of work, and the work continued after 25 days of stoppage. If the work is to be completed within the time limit, how many workers should be added?
有一工程计划用工人800名，限100天完成．不料从开工起，做35天后因事故停工，停工25天后继续开工，如果要在限期内完工，应增加工人多少名？
<gadget id="calculator">800 * 100</gadget>
<output>80_000</output>

<gadget id="calculator">800 * 35</gadget>
<output>28_000</output>

<gadget id="calculator">80_000 - 28_000</gadget>
<output>52_000</output>

<gadget id="calculator">100 - 35 - 25</gadget>
<output>40</output>

<gadget id="calculator">52_000 / 40</gadget>
<output>1_300</output>

<gadget id="calculator">1_300 - 800</gadget>
<output>500</output>

<result>500</result>