Aunt Li bought 2 kilograms of apples and 2 kilograms of pears at the fruit shop, and the total cost was 18.4 yuan. It is known that the pear is 3.8 yuan per kilogram, how much is the apple per kilogram?
李阿姨在水果店买了2千克苹果和2千克梨，一共用去18.4元．已知梨每千克3.8元，苹果每千克多少元？
<gadget id="calculator">18.4 / 2</gadget>
<output>9.2</output>

<gadget id="calculator">9.2 - 3.8</gadget>
<output>5.4</output>

<result>5.4</result>