What is the quotient of the sum of 280 and 420 divided by the product of 3.5 and 100?
280与420的和除以3.5与100的积，商是多少？
<gadget id="calculator">280 + 420</gadget>
<output>700</output>

<gadget id="calculator">3.5 * 100</gadget>
<output>350</output>

<gadget id="calculator">700 / 350</gadget>
<output>2</output>

<result>2</result>