A construction team built a section of road. It was originally planned to build 56 meters per day, and it took 15 days to complete. In fact, it was 4 meters more per day. How many days did it actually take?
某建筑队修筑一段公路，原计划每天修56米，15天完成，实际上每天多修4米，实际用了几天？
<gadget id="calculator">56 * 15</gadget>
<output>840</output>

<gadget id="calculator">56 + 4</gadget>
<output>60</output>

<gadget id="calculator">840 / 60</gadget>
<output>14</output>

<result>14</result>