What is the result of 0.8+0.2-0.8+0.2
0.8+0.2-0.8+0.2的结果是多少
<gadget id="calculator">0.2 - 0.8</gadget>
<output>-0.6</output>

<gadget id="calculator">0.8 + (-0.6) + 0.2</gadget>
<output>0.4</output>

<result>0.4</result>