It costs 6,400 yuan to buy 8 grade A tickets of "Golden Years", and 12,000 yuan to buy 20 grade B tickets. How much is each Class A ticket more expensive than a Class B ticket?
购买《流金岁月》的甲级票8张要6400元，购买乙级票20张要12000元．每张甲级票比乙级票贵多少元？
<gadget id="calculator">6_400 / 8</gadget>
<output>800</output>

<gadget id="calculator">12_000 / 20</gadget>
<output>600</output>

<gadget id="calculator">800 - 600</gadget>
<output>200</output>

<result>200</result>