(25.06-9.744*2.4)*0.4.
(25.06-9.744*2.4)*0.4．
<gadget id="calculator">9.744 * 2.4</gadget>
<output>23.3856</output>

<gadget id="calculator">25.06 - 23.3856</gadget>
<output>1.6744</output>

<gadget id="calculator">1.6744 * 0.4</gadget>
<output>0.66976</output>

<result>0.66976</result>