A construction team paves a railway, originally planned to pave 32 kilometers per day, and it will be completed in 5 days. Now the actual pavement is 40 kilometers per day, how many days can it be completed in advance?
一个建筑队铺一条铁路，原计划每天铺32千米，5天铺完．现在实际每天铺路40千米，可以提前几天铺完？
<gadget id="calculator">5 / 40</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">32 * (1/8)</gadget>
<output>4</output>

<gadget id="calculator">5 - 4</gadget>
<output>1</output>

<result>1</result>