Simple operation: 3.46*9.9+0.346.
简便运算：3.46*9.9+0.346．
<gadget id="calculator">3.46 * 9.9</gadget>
<output>34.254</output>

<gadget id="calculator">34.254 + 0.346</gadget>
<output>34.6</output>

<result>34.6</result>