What is the quotient of dividing the sum of 275 and 225 by the difference of 650 and 150?
用650与150的差去除275与225的和，商是多少？
<gadget id="calculator">275 + 225</gadget>
<output>500</output>

<gadget id="calculator">650 - 150</gadget>
<output>500</output>

<gadget id="calculator">500 / 500</gadget>
<output>1</output>

<result>1</result>