How much greater is the sum of 0.65 and 0.39 than their difference
0.65与0.39的和比它们的差大多少
<gadget id="calculator">0.65 + 0.39</gadget>
<output>1.04</output>

<gadget id="calculator">0.65 - 0.39</gadget>
<output>0.26</output>

<gadget id="calculator">1.04 - 0.26</gadget>
<output>0.78</output>

<result>0.78</result>