A small stick is sawed into equal small pieces, sawed 4 times in total, how much is each piece of the small stick
把一根小棒锯成相等的小段，共锯了4次，每段是这根小棒的多少
<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>