4.89*6.3+48.9*0.37 (simple calculation)
4.89*6.3+48.9*0.37(简便计算)
<gadget id="calculator">4.89 * 6.3</gadget>
<output>30.807</output>

<gadget id="calculator">48.9 * 0.37</gadget>
<output>18.093</output>

<gadget id="calculator">30.807 + 18.093</gadget>
<output>48.9</output>

<result>48.9</result>