Simple calculation: 0.85+8.5*9.9.
简算：0.85+8.5*9.9．
<gadget id="calculator">8.5 * 9.9</gadget>
<output>84.15</output>

<gadget id="calculator">0.85 + 84.15</gadget>
<output>85</output>

<result>85</result>