The price of a down jacket is 420 yuan, and its profit rate is 40%. Due to the sudden drop in the cold air in Shanghai, if the merchant plans to sell it at a profit of more than 60%, how much more should the planned selling price be?
一件羽绒服的售价是420元，其盈利率是40%，因申城突降冷空气，如果商家计划获利60%以上出售，则计划售价应超过多少元？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">420 / (7/5)</gadget>
<output>300</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 + (3/5)</gadget>
<output>8/5 = around 1.6</output>

<gadget id="calculator">300 * (8/5)</gadget>
<output>480</output>

<gadget id="calculator">480 - 300</gadget>
<output>180</output>

<result>180</result>