A merchant buys apples 400 kilometers away. The purchase price is 1.2 yuan/kg, and the shipping fee is 5 yuan per ton per kilometer. If the loss is not included, how much yuan per kilogram should be sold in order to obtain a 25% profit?
一商户到400千米外收购苹果，收购价1.2元/千克，运费为每吨每千米5元，如果不计损耗，要想获得25%的利润，每千克应卖多少元？
<gadget id="calculator">1 * 1_000</gadget>
<output>1_000</output>

<gadget id="calculator">1.2 * 1_000</gadget>
<output>1_200</output>

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

<gadget id="calculator">1.2 * 1_000 * (1/4)</gadget>
<output>300</output>

<gadget id="calculator">5 * 400</gadget>
<output>2_000</output>

<gadget id="calculator">1_200 + 300 + 2_000</gadget>
<output>3_500</output>

<gadget id="calculator">3_500 / 1_000</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>