42 students from a certain school participated in the 3rd "Entering the Kingdom of Mathematics" Mathematics TV Invitational Competition in Wuhan. The students who won the first prize accounted for (1/6), the students who won the second prize accounted for (2/7), and the rest were all If you win the third prize, how many students have won the third prize?
某校42名学生参加武汉市第三届《走进数学王国》数学电视邀请赛，获一等奖的学生占(1/6)，获二等奖的学生占(2/7)，其余的都获得三等奖，那么获三等奖的学生有多少人？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (1/6) - (2/7)</gadget>
<output>23/42 = around 0.547619</output>

<gadget id="calculator">42 * (23/42)</gadget>
<output>23</output>

<result>23</result>