The American Basketball Professional League (NBA) Finals is held between the Los Angeles Lakers and the Boston Celtics. The game adopts a 7-game 4-win system, that is, the team that wins 4 games first will win the championship. The game is divided into home games. And the away game, because the Los Angeles Lakers have a better record in the regular season, so the first, second, sixth, and seventh games are played in Los Angeles, and the third-fifth games are played in Boston. Finally, the Lakers won the championship at their own home court. , then how many possibilities are there for the outcome of the game?
美国篮球职业联赛(NBA)总决赛在洛杉矶湖人队和波士顿凯尔特人队之间进行，比赛采用7场4胜制，即先获得4场胜利的球队将得到总冠军，比赛分为主场和客场，由于洛杉矶湖人队常规赛战绩较好，所以第1，第2，第6，第7场均在洛杉矶进行，第3-5场在波士顿进行，最后湖人队在自己的主场获得总冠军，那么比赛过程中的胜负结果共有多少种可能．
<gadget id="calculator">5 * 4 * 3 * 2 * 1</gadget>
<output>120</output>

<gadget id="calculator">3 * 2 * 1 * 2 * 1</gadget>
<output>12</output>

<gadget id="calculator">120 / 12</gadget>
<output>10</output>

<gadget id="calculator">6 * 5 * 4 * 3 * 2 * 1</gadget>
<output>720</output>

<gadget id="calculator">3 * 2 * 1 * 3 * 2 * 1</gadget>
<output>36</output>

<gadget id="calculator">720 / 36</gadget>
<output>20</output>

<gadget id="calculator">10 + 20</gadget>
<output>30</output>

<result>30</result>