A piece of wood is sawn into 5 sections, the time it takes to saw one section is the total time it takes to finish sawing
一根木料锯成5段，锯一段用的时间是锯完所用总时间的多少
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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