The school cafeteria burned 1.2 tons of coal in March, saving 0.3 tons compared with February. What percentage was the saving?
学校食堂三月份烧煤1.2吨，比二月份节省0.3吨，节省了百分之几？
<gadget id="calculator">1.2 + 0.3</gadget>
<output>1.5</output>

<gadget id="calculator">0.3 / 1.5</gadget>
<output>0.2</output>

<result>0.2</result>