Oranges are 1.5 yuan per kilogram, and bananas are 2.6 yuan per kilogram. Mom bought 1 kilogram each. How much did it cost?
桔子每千克1.5元，香蕉每千克2.6元，妈妈各买了1千克，用了多少钱？
<gadget id="calculator">1.5 * 1</gadget>
<output>1.5</output>

<gadget id="calculator">2.6 * 1</gadget>
<output>2.6</output>

<gadget id="calculator">1.5 + 2.6</gadget>
<output>4.1</output>

<result>4.1</result>