For the first time, 750 bags of cement were shipped to the construction site, and for the second time, the amount of cement shipped was three times that of the first time. How many tons of cement were shipped twice?
工地第一次运来水泥750袋，第二次运来的水泥是第一次的3倍．两次共运来水泥多少吨？
<gadget id="calculator">750 * 3</gadget>
<output>2_250</output>

<gadget id="calculator">2_250 + 750</gadget>
<output>3_000</output>

<result>3_000</result>