Off formula calculation: 4.02-3.5+0.98; 54/(3.94+6.86)
脱式计算：4.02-3.5+0.98；54/(3.94+6.86)
<gadget id="calculator">3.94 + 6.86</gadget>
<output>10.8</output>

<gadget id="calculator">54 / 10.8</gadget>
<output>5</output>

<result>5</result>