2.91*3.92-0.51*3.92+3.92*1.4．
2.91*3.92-0.51*3.92+3.92*1.4．
<gadget id="calculator">2.91 * 3.92</gadget>
<output>11.4072</output>

<gadget id="calculator">0.51 * 3.92</gadget>
<output>1.9992</output>

<gadget id="calculator">11.4072 - 1.9992</gadget>
<output>9.408</output>

<gadget id="calculator">3.92 * 1.4</gadget>
<output>5.488</output>

<gadget id="calculator">9.408 + 5.488</gadget>
<output>14.896</output>

<result>14.896</result>