Add "%" after 15 to reduce the number to the original number
在15的后面添上"%"所得的数就缩小到原数的多少
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/20) / 15</gadget>
<output>1/100 = around 0.01</output>

<result>1/100 = around 0.01</result>