To build a road, an average of 42 meters is repaired every day. After 28 days of repairing, there are still 420 meters that have not been repaired. How many meters is this road?
修一条路，平均每天修42米，修了28天，还有420米没有修．这条路长多少米？
<gadget id="calculator">42 * 28</gadget>
<output>1_176</output>

<gadget id="calculator">1_176 + 420</gadget>
<output>1_596</output>

<result>1_596</result>