What is the quotient of subtracting 300 from 320 and dividing by 1?
320减去300的差，再除以1，商是多少多少
<gadget id="calculator">320 - 300</gadget>
<output>20</output>

<gadget id="calculator">20 / 1</gadget>
<output>20</output>

<result>20</result>