A computer whose original price was 3,500 yuan, now sells for 2,800 yuan, how much has it been reduced?
一种电脑，原价3500元，现在的售价是2800元，降低了百分之几？
<gadget id="calculator">3_500 - 2_800</gadget>
<output>700</output>

<gadget id="calculator">700 / 3_500</gadget>
<output>1/5 = around 0.2</output>

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