A factory used to use 10.2 tons of water per day, but now it can save 2.7 tons of water per day due to the improvement of water equipment. How many more days can it use for the original 25 days of water consumption?
某工厂原来每天用水10.2吨，由于改进用水设备，现在每天可节约2.7吨水，原来25天的用水量，现在可多用多少天？
<gadget id="calculator">10.2 * 25</gadget>
<output>255</output>

<gadget id="calculator">10.2 - 2.7</gadget>
<output>7.5</output>

<gadget id="calculator">255 / 7.5</gadget>
<output>34</output>

<gadget id="calculator">34 - 25</gadget>
<output>9</output>

<result>9</result>