Mom bought 1.2 kilograms of tomatoes at 2.4 yuan per kilogram. How much did mom spend?
妈妈买了1.2千克的西红柿，每千克2.4元．妈妈花了多少钱？
<gadget id="calculator">2.4 * 1.2</gadget>
<output>2.88</output>

<result>2.88</result>