What is the quotient of the sum of 8.4 and 1.6 divided by 4?
8.4与1.6的和除以4，商是多少？
<gadget id="calculator">8.4 + 1.6</gadget>
<output>10</output>

<gadget id="calculator">10 / 4</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>