Haitai Primary School held a broadcasting exercise competition. A total of 574 people participated, with an average of 72 people in each representative team (including only 70 people in the Seal Team). How many representative teams participate in the competition?
海台小学举办广播操比赛，共有574人参加，平均每个代表队72人(其中海豹队只有70人)．有几个代表队参加比赛？
<gadget id="calculator">574 - 70</gadget>
<output>504</output>

<gadget id="calculator">504 / 72</gadget>
<output>7</output>

<gadget id="calculator">7 + 1</gadget>
<output>8</output>

<result>8</result>