The rice in Fumin Supermarket is 3.98 yuan per kilogram, and my mother bought 42 kilograms. How much should I pay?
富民超市的大米，每千克3.98元，妈妈买了42千克，应付多少元？
<gadget id="calculator">3.98 * 42</gadget>
<output>167.16</output>

<result>167.16</result>