The school paid 800 yuan for electricity in June, saving 200 yuan compared with May. How much is the savings?
学校六月份付出电费800元，比五月份节约200元，节约了百分之几？
<gadget id="calculator">800 + 200</gadget>
<output>1_000</output>

<gadget id="calculator">200 / 1_000</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/5) * 1</gadget>
<output>1/5 = around 0.2</output>

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