In an exam, 3 of the total number (1/3) got 3 points, 4 of the total number (1/4) got 4 points, 5 of the total number (1/5) got 5 points, and the rest Both get 2 points. Given that there are as many people who scored 2 and 5, how many people scored 4?
一次考试中，总人数的(1/3)又3人得了3分，总人数的(1/4)又4人得了4分，总人数的(1/5)又5得了5分，其余人都得2分．已知得2分的人数和得5分的人数一样多，则有多少人得了4分．
<gadget id="calculator">15 * 17</gadget>
<output>255</output>

<gadget id="calculator">255 + 4</gadget>
<output>259</output>

<result>259</result>