Simple calculation: (300/75)+(300/25).
简便计算：(300/75)+(300/25)．
<gadget id="calculator">300 / 75</gadget>
<output>4</output>

<gadget id="calculator">300 / 25</gadget>
<output>12</output>

<gadget id="calculator">4 + 12</gadget>
<output>16</output>

<result>16</result>