Mom bought 1.8 kilograms of eggplants and tomatoes. 2.2 yuan per kilogram of eggplant, 3.8 yuan per kilogram of tomato. How much did the two dishes cost in total? 5 points)
妈妈买来茄子和西红柿各1.8千克．每千克茄子2.2元，每千克西红柿3.8元．两种菜一共花了多少钱？5分)
<gadget id="calculator">1.8 * 2.2</gadget>
<output>3.96</output>

<gadget id="calculator">1.8 * 3.8</gadget>
<output>6.84</output>

<gadget id="calculator">3.96 + 6.84</gadget>
<output>10.8</output>

<result>10.8</result>