9.744/2.4-2.4*0.5.
9.744/2.4-2.4*0.5．
<gadget id="calculator">9.744 / 2.4</gadget>
<output>4.06</output>

<gadget id="calculator">2.4 * 0.5</gadget>
<output>1.2</output>

<gadget id="calculator">4.06 - 1.2</gadget>
<output>2.86</output>

<result>2.86</result>