Mom took 100 yuan to buy 3.8 kilograms of oranges, 2.9 yuan per kilogram of oranges, how much did mother spend on buying oranges?
妈妈拿了100元钱去买了3.8千克橘子，每千克橘子2.9元，妈妈买橘子用了多少钱？
<gadget id="calculator">2.9 * 3.8</gadget>
<output>11.02</output>

<result>11.02</result>