It has been 6 days to build a road with a length of 800 meters, with an average of 104 meters per day. How many meters are left unrepaired?
修一条长800米的路，已经修了6天，平均每天修104米．还剩多少米没修？
<gadget id="calculator">104 * 6</gadget>
<output>624</output>

<gadget id="calculator">800 - 624</gadget>
<output>176</output>

<result>176</result>