Calculation: (309+139)/(39-23)
计算：(309+139)/(39-23)
<gadget id="calculator">309 + 139</gadget>
<output>448</output>

<gadget id="calculator">39 - 23</gadget>
<output>16</output>

<gadget id="calculator">448 / 16</gadget>
<output>28</output>

<result>28</result>