The total length of a TV series is 490 minutes, and there are 210 minutes left after 8 episodes are broadcast. How many minutes is the average episode of this TV show?
一部电视片全长490分钟，播出8集后还剩210分钟．这部电视片平均每集长多少分钟？
<gadget id="calculator">490 - 210</gadget>
<output>280</output>

<gadget id="calculator">280 / 8</gadget>
<output>35</output>

<result>35</result>