The road construction team plans to build 1,500 meters of road. It has been repaired for 4 days, and 350 meters are repaired every day. How many meters are left to be repaired?
修路队计划修路1500米，已经修了4天，每天修350米，还有多少米没有修？
<gadget id="calculator">350 * 4</gadget>
<output>1_400</output>

<gadget id="calculator">1_500 - 1_400</gadget>
<output>100</output>

<result>100</result>