A small stick was sawed 4 times in equal length segments without overlap, and each segment was ((())/(())) of the small stick.
一根小棒锯成长度相等的段数共锯了4次，没有重叠据，每段是这根小棒的((())/(()))．
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>