In the following formula, what is the equivalent of the calculation result of 120/40
下面式子中，与120/40的计算结果相等的是多少
<gadget id="calculator">120 / 8</gadget>
<output>15</output>

<gadget id="calculator">40 / 8</gadget>
<output>5</output>

<gadget id="calculator">15 / 5</gadget>
<output>3</output>

<result>3</result>