Bairunfa Supermarket plans to sell 500 mopeds in the second quarter, which is actually an increase (1/5) compared to the plan. How many mopeds are actually sold in the second quarter?
百润发超市计划第二季度销售助力车500辆，实际比计划增加(1/5)，实际第二季度销售助力车多少辆？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">500 * (6/5)</gadget>
<output>600</output>

<result>600</result>