Simple calculation: 89+4.7-0.89+5.3.
简便计算：89+4.7-0.89+5.3．
<gadget id="calculator">4.7 - 0.89</gadget>
<output>3.81</output>

<gadget id="calculator">89 + 3.81 + 5.3</gadget>
<output>98.11</output>

<result>98.11</result>