Dahua Iron and Steel Works saved an average of 900 kilograms of coal per month from January to March this year. How many kilograms of coal was saved in total in three months?
大华钢铁厂今年一到三月份平均每月节约用煤900千克，三个月共节约用煤多少千克？
<gadget id="calculator">900 * 3</gadget>
<output>2_700</output>

<result>2_700</result>