What is the quotient of the sum of 80 and 40 divided by their difference? What is the correct column
80与40的和除以它们的差，商是多少？正确的列式是多少
<gadget id="calculator">80 + 40</gadget>
<output>120</output>

<gadget id="calculator">80 - 40</gadget>
<output>40</output>

<gadget id="calculator">120 / 40</gadget>
<output>3</output>

<result>3</result>