The construction team laid a section of railway, and planned to complete it in 25 days. As a result, the full length (1/4) was laid in the first 5 days. At this speed, can this section of road be paved a few days in advance?
工程队铺一段铁路，计划25天完成，结果前5天就铺了全长的(1/4)．照这样的速度，可以提前几天铺好这段路？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">5 / (1/4)</gadget>
<output>20</output>

<gadget id="calculator">25 - 20</gadget>
<output>5</output>

<result>5</result>