How much is the sum of 0.1 and 0.01 different from theirs
0.1与0.01的和比它们的差多多少
<gadget id="calculator">0.1 + 0.01</gadget>
<output>0.11</output>

<gadget id="calculator">0.1 - 0.01</gadget>
<output>0.09</output>

<gadget id="calculator">0.11 - 0.09</gadget>
<output>0.02</output>

<result>0.02</result>