Xiao Ming rides a bicycle from home to the library. He rides at a speed of 180 m/min. After riding for 15 minutes, he is still 680 meters away from the library. How many meters is it from Xiao Ming's house to the library?
小明骑自行车从家到图书馆，他骑车的速度是180米/分，骑了15分钟后离图书馆还有680米．小明家到图书馆一共有多少米？
<gadget id="calculator">180 * 15</gadget>
<output>2_700</output>

<gadget id="calculator">2_700 + 680</gadget>
<output>3_380</output>

<result>3_380</result>