74+83+95-82-73-94=how much.
74+83+95-82-73-94=多少．
<gadget id="calculator">95 - 82 - 73 - 94</gadget>
<output>-154</output>

<gadget id="calculator">74 + 83 + (-154)</gadget>
<output>3</output>

<result>3</result>