Dad took Xiao Ming to go skiing. It took 4 minutes to take the cable car up the mountain, and the cable car traveled 200 meters per minute. It took 20 minutes to ski down the mountain at 70 meters per minute. How much more is skiing than cable car travel?
爸爸带小明去滑雪，乘缆车上山用了4分钟，缆车每分钟行200米．滑雪下山用了20分钟，每分钟行70米．滑雪比乘缆车多行多少米？
<gadget id="calculator">20 * 70</gadget>
<output>1_400</output>

<gadget id="calculator">4 * 200</gadget>
<output>800</output>

<gadget id="calculator">1_400 - 800</gadget>
<output>600</output>

<result>600</result>