What is the quotient of the difference between 9(1/2) and (1/2) and their sum?
9(1/2)与(1/2)的差，除它们的和，商是多少？
<gadget id="calculator">10 / 8</gadget>
<output>5/4 = around 1.25</output>

<result>5/4 = around 1.25</result>