2.50 yuan per kilogram of oranges, 4.60 yuan per kilogram of bananas. Mom bought 3 kilograms of oranges and 2 kilograms of bananas. How much did she spend in total? (
每千克橘子2.50元，每千克香蕉4.60元．妈妈买了3千克橘子和2千克香蕉，一共花了多少元？(
<gadget id="calculator">2.5 * 3</gadget>
<output>7.5</output>

<gadget id="calculator">4.6 * 2</gadget>
<output>9.2</output>

<gadget id="calculator">7.5 + 9.2</gadget>
<output>16.7</output>

<result>16.7</result>