A section of road is 480 meters long, 120 meters have been repaired, and the remaining 90 meters will be repaired every day. How many days will it take?
一段公路480米，已修了120米，剩下的每天修90米，还需要几天？
<gadget id="calculator">480 - 120</gadget>
<output>360</output>

<gadget id="calculator">360 / 90</gadget>
<output>4</output>

<result>4</result>