Nine truckloads of cement were transported to the construction site, with an average of 30 bags per truckload, and each bag of cement weighed 50kg. How many kilograms did the cement weigh in total?
工地运来9车水泥，平均每车装30袋，每袋水泥重50千克，这些水泥共重多少千克？
<gadget id="calculator">30 * 9</gadget>
<output>270</output>

<gadget id="calculator">50 * 270</gadget>
<output>13_500</output>

<result>13_500</result>