Each bucket of water weighs about 19 kilograms. If I deliver 25 buckets of water every day, how many kilograms of water will I deliver every day?
每桶水约重19千克，我每天送25桶水，每天送多少千克水．
<gadget id="calculator">19 * 25</gadget>
<output>475</output>

<result>475</result>