(0.12+0.23+0.34)*(0.23+0.34+0.45)-(0.12+0.23+0.34+0.45)*(0.23+0.34)=how much.
(0.12+0.23+0.34)*(0.23+0.34+0.45)-(0.12+0.23+0.34+0.45)*(0.23+0.34)=多少．
<gadget id="calculator">0.12 + 0.23 + 0.34</gadget>
<output>0.69</output>

<gadget id="calculator">0.23 + 0.34 + 0.45</gadget>
<output>1.02</output>

<gadget id="calculator">0.69 * 1.02</gadget>
<output>0.7038</output>

<gadget id="calculator">0.12 + 0.23 + 0.34 + 0.45</gadget>
<output>1.14</output>

<gadget id="calculator">0.23 + 0.34</gadget>
<output>0.57</output>

<gadget id="calculator">1.14 * 0.57</gadget>
<output>0.6498</output>

<gadget id="calculator">0.7038 - 0.6498</gadget>
<output>0.054</output>

<result>0.054</result>