Yonghong Canteen plans to use 400 tons of water in April, and the actual water consumption is 360 tons. What percentage is actually saved?
永红食堂四月份计划用水400吨，实际用水360吨实际节约百分之几？
<gadget id="calculator">400 - 360</gadget>
<output>40</output>

<gadget id="calculator">40 / 400</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>