In a game in the NBA Eastern Conference Finals, Heat star James made 19 of 26 shots and 5 of 9 free throws, scoring 45 points. A goal in the field is counted as 2 points, and a free throw is counted as 1 point, so how many 3-pointers James has made in this game.
在NBA东部决赛的一场比赛中，热火队球星詹姆期全场26投19中加上9罚5中，得45分，已知3分线外投中一球记3分，3分线内投中一球算2分，罚球算1分，则詹姆期本场比赛投中了多少个3分球．
<gadget id="calculator">45 - 38 - 5</gadget>
<output>2</output>

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

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<result>2</result>