The fruit store returns apples and red oranges. The weight of apples is twice that of red oranges. The purchase price of apples is 2.4 yuan per kilogram, and the red oranges are 1.6 yuan per kilogram. Now the purchase price is increased by 20%. When the red oranges are sold out, the apples When there is still (1/3) left, the total profit is 600 yuan, how many kilograms of red oranges do you want to buy?
水果店运回苹果和红橙，苹果的重量是红橙的2倍，苹果购入价每千克2.4元，红橙每千克1.6元，现在购入价加价20%出售，当红橙售完，苹果还剩(1/3)时，一共盈利600元，求购进红橙多少千克？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1.6 * (1/5)</gadget>
<output>0.32</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">2.4 * (1/5) * 2 * (2/3)</gadget>
<output>0.64</output>

<gadget id="calculator">0.32 + 0.64</gadget>
<output>0.96</output>

<gadget id="calculator">600 / 0.96</gadget>
<output>625</output>

<result>625</result>