Yimin Candy Store mixes candy, sharing 10kg of toffee at 24 yuan per kilogram; 20kg of soft candy at 18 yuan per kilogram; 20kg of hard candy at 12 yuan per kilogram. How much should the mixed sugar prepared in this way be sold at least per kilogram?
益民糖果店配混合糖，共用去每千克24元的奶糖10千克；每千克18元的软糖20千克；每千克12元的硬糖20千克．这样配成的混合糖每千克至少应卖多少元？
<gadget id="calculator">24 * 10</gadget>
<output>240</output>

<gadget id="calculator">18 * 20</gadget>
<output>360</output>

<gadget id="calculator">12 * 20</gadget>
<output>240</output>

<gadget id="calculator">240 + 360 + 240</gadget>
<output>840</output>

<gadget id="calculator">10 + 20 + 20</gadget>
<output>50</output>

<gadget id="calculator">840 / 50</gadget>
<output>84/5 = around 16.8</output>

<result>84/5 = around 16.8</result>