Dad bought 3 kilograms of pears and 4 kilograms of apples for a total of 45.2 yuan, 3.6 yuan per kilogram of pears, how much is it per kilogram of apples.
爸爸买3千克梨和4千克苹果共用45.2元，每千克梨3.6元，每千克苹果多少元．
<gadget id="calculator">3.6 * 3</gadget>
<output>10.8</output>

<gadget id="calculator">45.2 - 10.8</gadget>
<output>34.4</output>

<gadget id="calculator">34.4 / 4</gadget>
<output>8.6</output>

<result>8.6</result>