Congcong rides a bicycle from school to the Children's Palace. It is known that he rides a bicycle at 210 meters per minute. He has ridden for 18 minutes and is 140 meters away from the Children's Palace. How many meters is it from the school to the Children's Palace?
聪聪骑车从学校去少年宫，已知他骑车每分钟行210米，他骑了18分钟，距少年宫还有140米，从学校到少年宫有多少米？
<gadget id="calculator">210 * 18</gadget>
<output>3_780</output>

<gadget id="calculator">3_780 + 140</gadget>
<output>3_920</output>

<result>3_920</result>