Electric car stores engage in preferential activities during the May Day period. 1800 yuan can buy an electric car, which is 200 yuan cheaper than the original price. How much is the current price cheaper than the original price?
电动车商店在五一期间搞优惠活动．1800元能买一辆电动车，比原价便宜了200元．现价比原价便宜了百分这几？
<gadget id="calculator">1_800 + 200</gadget>
<output>2_000</output>

<gadget id="calculator">200 / 2_000</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>