The school’s water fee in May is 2,000 yuan, which is 500 yuan less than in April. How much is the savings?
学校五月份的水费是2000元，比四月份节约500元，节约了多少
<gadget id="calculator">2_000 + 500</gadget>
<output>2_500</output>

<gadget id="calculator">500 / 2_500</gadget>
<output>1/5 = around 0.2</output>

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