There is a section of the Shanghai-Hangzhou Highway for maintenance. It is planned to repair 90 meters per day, and the task will be completed in 40 days. The actual repair is 30 meters more than planned every day. How many days will the task be completed?
沪杭公路有一段道路进行维修，计划每天维修90米，40天完成任务，实际每天比计划多修30米，实际几天完成任务？
<gadget id="calculator">90 * 40</gadget>
<output>3_600</output>

<gadget id="calculator">90 + 30</gadget>
<output>120</output>

<gadget id="calculator">3_600 / 120</gadget>
<output>30</output>

<result>30</result>