new batch of sportswear in the mall, when 60% of the total is sold, just recovers 80% of the total cost; due to the season change, the remaining sportswear is going to be sold at a 10% discount. When the mall sells all the sportswear, what is the total profit of the store?
商场新进一批运动服，当售出全部的60%，恰好收回全部成本的80%；由于换季余下的运动服准备打九折售出．当商场将这批运动服全部售出时，商店共盈利多少．
<gadget id="calculator">7 / 25</gadget>
<output>7/25 = around 0.28</output>

<result>7/25 = around 0.28</result>