A wooden stick is sawed into small pieces of the same length, and after sawing 4 times, what is the length of each small piece to the total length of the small stick?
一根木棒锯成同样长的小段，4次锯完，每小段长度占这根小棒全长的多少．
<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>