Chang Wu and Gu Li competed for the "Chess Master" Go championship. There was no tie in the game. Whoever wins 4 games first will win the game. May I ask: How many different ways are there in the game process?
常吴与古力两人进行围棋"棋圣"冠军争霸赛，比赛没有平局，谁先胜4局即获得比赛的胜利，请问：比赛过程一共有多少种不同的方式？
<gadget id="calculator">7 * 6 * 5</gadget>
<output>210</output>

<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<gadget id="calculator">210 / 6</gadget>
<output>35</output>

<gadget id="calculator">2 * 35</gadget>
<output>70</output>

<result>70</result>