Calculation: (2-(1-1.5)/1)*6.
计算：(2-(1-1.5)/1)*6．
<gadget id="calculator">1 - 1.5</gadget>
<output>-0.5</output>

<gadget id="calculator">(-0.5) / 1</gadget>
<output>-0.5</output>

<gadget id="calculator">2 - (-0.5)</gadget>
<output>2.5</output>

<gadget id="calculator">2.5 * 6</gadget>
<output>15</output>

<result>15</result>