What is the quotient of the sum of 10 and 7.5 divided by their difference? What is the correct column
10与7.5的和除以它们的差，商是多少？正确的列式为多少
<gadget id="calculator">10 + 7.5</gadget>
<output>17.5</output>

<gadget id="calculator">10 - 7.5</gadget>
<output>2.5</output>

<gadget id="calculator">17.5 / 2.5</gadget>
<output>7</output>

<result>7</result>