A store goes to the apple producing area to buy apples, the purchase price is 1.80 yuan per kilogram, the distance from the producing place to the store is 600 kilometers, and the freight is 1.5 yuan per ton for every 1 kilometer. %, if the store wants to achieve a 25% profit, how much should the retail price be per kilogram.
某商店到苹果产地去收购苹果，收购价为每千克1.80元，从产地到商店距离600千米，运费为每吨每去1千米收1.5元，如果在运输及销售过程中的损耗是10%，商店要想实现25%的利润，零售价应是每千克多少元．
<gadget id="calculator">1.8 * 1_000</gadget>
<output>1_800</output>

<gadget id="calculator">1.5 * 600</gadget>
<output>900</output>

<gadget id="calculator">1_800 + 900</gadget>
<output>2_700</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">2_700 * (5/4)</gadget>
<output>3_375</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1_000 * (9/10)</gadget>
<output>900</output>

<gadget id="calculator">3_375 / 900</gadget>
<output>15/4 = around 3.75</output>

<result>15/4 = around 3.75</result>