Simple calculation: 8.9-0.76*8.9-8.9*0.14.
简算：8.9-0.76*8.9-8.9*0.14．
<gadget id="calculator">0.76 * 8.9</gadget>
<output>6.764</output>

<gadget id="calculator">8.9 * 0.14</gadget>
<output>1.246</output>

<gadget id="calculator">8.9 - 6.764 - 1.246</gadget>
<output>0.89</output>

<result>0.89</result>