A canteen burned 45 tons of coal in November, saving 5 tons compared to the original plan. How much was the saving?
一个食堂十一月份烧煤45吨，比原计划节约了5吨，节约了百分之几？
<gadget id="calculator">45 + 5</gadget>
<output>50</output>

<gadget id="calculator">5 / 50</gadget>
<output>1/10 = around 0.1</output>

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