Uncle Zhang bought 3 kilograms of apples at 8.2 yuan per kilogram, and another 4 kilograms of pears, which cost a total of 55.2 yuan. How much is a kilogram of pears?
张叔叔买了3千克苹果，每千克8.2元，又买了4千克梨，一共花了55.2元，每千克梨多少元？
<gadget id="calculator">8.2 * 3</gadget>
<output>24.6</output>

<gadget id="calculator">55.2 - 24.6</gadget>
<output>30.6</output>

<gadget id="calculator">30.6 / 4</gadget>
<output>7.65</output>

<result>7.65</result>