The construction team plans to lay 2,400 meters of rail in 50 days. The actual laying of 12 meters more than the plan every day. How many days will it actually take to lay the track?
施工队计划用50天铺设2400米长的铁轨．实际每天比计划多铺设12米．实际多少天可以铺完这段铁轨？
<gadget id="calculator">2_400 / 50</gadget>
<output>48</output>

<gadget id="calculator">48 + 12</gadget>
<output>60</output>

<gadget id="calculator">2_400 / 60</gadget>
<output>40</output>

<result>40</result>