(12+23.1/0.75)*0.4.
(12+23.1/0.75)*0.4．
<gadget id="calculator">23.1 / 0.75</gadget>
<output>30.8</output>

<gadget id="calculator">12 + 30.8</gadget>
<output>42.8</output>

<gadget id="calculator">42.8 * 0.4</gadget>
<output>17.12</output>

<result>17.12</result>