Xiaoli's home is 1800m away from the school, and she has walked 620m in the first 10 minutes. How many meters do you have to walk to get to school?
小丽家到学校有1800m，她前10分钟已经走了620米．还要走多少米才能到学校？
<gadget id="calculator">1_800 - 620</gadget>
<output>1_180</output>

<result>1_180</result>