Calculation: 2.25*3.14*4+3.14.
计算：2.25*3.14*4+3.14．
<gadget id="calculator">2.25 * 3.14 * 4</gadget>
<output>28.26</output>

<gadget id="calculator">28.26 + 3.14</gadget>
<output>31.4</output>

<result>31.4</result>