What is the quotient of the sum of 47 and 33 divided by the difference between 36 and 16?
47与33的和除以36与16的差，商是多少．
<gadget id="calculator">47 + 33</gadget>
<output>80</output>

<gadget id="calculator">36 - 16</gadget>
<output>20</output>

<gadget id="calculator">80 / 20</gadget>
<output>4</output>

<result>4</result>