A factory planned to use 25 tons of water per day in February this year, but actually saved 5 tons per day. How many tons did it actually use in February?
一个工厂今年二月份计划每天用水25吨，实际每天节省5吨，二月份实际用水多少吨？
<gadget id="calculator">25 - 5</gadget>
<output>20</output>

<gadget id="calculator">20 * 28</gadget>
<output>560</output>

<result>560</result>