4 trucks of cement are shipped to the construction site, each truck has 9 bags of cement, each bag is 50 kg, how many kg of cement are shipped in total?
建筑工地运来4车水泥，每车9包水泥，每包50千克，一共运来水泥多少千克？
<gadget id="calculator">50 * 4 * 9</gadget>
<output>1_800</output>

<result>1_800</result>