Uncle Li has to deliver 78 barrels of mineral water a day, and each barrel of mineral water weighs about 19 kilograms. How many kilograms of mineral water does Uncle Li send a day?
李叔叔一天要送78桶矿泉水，每桶矿泉水约重19千克．李叔叔一天要送多少千克矿泉水？
<gadget id="calculator">19 * 78</gadget>
<output>1_482</output>

<result>1_482</result>