What is the quotient of the sum of 720 and 160 divided by the difference between 84 and 40?
720与160的和，除以84与40的差，商是多少？
<gadget id="calculator">720 + 160</gadget>
<output>880</output>

<gadget id="calculator">84 - 40</gadget>
<output>44</output>

<gadget id="calculator">880 / 44</gadget>
<output>20</output>

<result>20</result>