If a steel pipe is sawed into 5 sections, and the time for each sawing is equal, then the time spent on sawing the first section accounts for ((())/(())) of the time spent on sawing all the pieces.
把一根钢管锯成5段，每锯一次的时间相等，那么锯第一段所用时间占全部锯完所用时间的((())/(()))．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>