The dairy processing plant plans to use 300 tons of water in April, but the actual water consumption is 240 tons. What percentage did you save?
乳品加工厂四月份计划用水300吨，实际用水240吨．节约了百分之几？
<gadget id="calculator">300 - 240</gadget>
<output>60</output>

<gadget id="calculator">60 / 300</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>