5 is more than 4 (1/4), how much is 4 less than 5
5比4多(1/4)，则4比5少多少
<gadget id="calculator">5 - 4</gadget>
<output>1</output>

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

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