The price of washing machines dropped from 1,500 yuan to 1,200 yuan each. By what percentage did the price decrease?
洗衣机的价格从每台1500元降到每台1200元，价格降低了百分之几？
<gadget id="calculator">1_500 - 1_200</gadget>
<output>300</output>

<gadget id="calculator">300 / 1_500</gadget>
<output>1/5 = around 0.2</output>

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