Mom went to the fruit shop and bought 3.6 kilograms of bananas and pineapples each. Bananas cost 2.4 yuan per kilogram and pineapples cost 2.6 yuan per kilogram. How much did you spend in total?
妈妈去水果店买了香蕉和菠萝各3.6千克，每千克香蕉是2.4元，每千克菠萝是2.6元，一共花了多少元？
<gadget id="calculator">2.4 * 3.6</gadget>
<output>8.64</output>

<gadget id="calculator">2.6 * 3.6</gadget>
<output>9.36</output>

<gadget id="calculator">8.64 + 9.36</gadget>
<output>18</output>

<result>18</result>