My mother brought 206 yuan to the vegetable market. The beef was 22 yuan per kilogram, and I bought 3 kilograms. The remaining money just bought 5 kilograms of mutton. How much is mutton per kilogram?
妈妈带了206元去菜场，牛肉每千克22元，买了3千克，剩下的钱正好买5千克羊肉，每千克羊肉多少钱？
<gadget id="calculator">22 * 3</gadget>
<output>66</output>

<gadget id="calculator">206 - 66</gadget>
<output>140</output>

<gadget id="calculator">140 / 5</gadget>
<output>28</output>

<result>28</result>