Mom bought 5.2 kilograms of rice and 1.45 kilograms of lean meat from the supermarket, and the total cost was 31.38 yuan. Knowing that rice is 1.35 yuan per kilogram, how much is lean meat per kilogram?
妈妈从超市买回来5.2千克大米和1.45千克瘦肉，一共用去31.38元．知道大米每千克1.35元，瘦肉每千克多少元？
<gadget id="calculator">1.35 * 5.2</gadget>
<output>7.02</output>

<gadget id="calculator">31.38 - 7.02</gadget>
<output>24.36</output>

<gadget id="calculator">24.36 / 1.45</gadget>
<output>16.8</output>

<result>16.8</result>