There are more than 200 students participating in this sixth grade mathematics competition. Those who are 14 years old account for (1/7) of the total number of participants, and those who are 13 years old account for (1/5) of the total number of participants. Year-olds accounted for 1/3 of the total number of participants, so how many other students of these ages are there?
参加本次六年级数学竞赛的同学有200多人，年龄是14岁的恰好占参加总人数的(1/7)，年龄是13岁的占参赛总人数的(1/5)，年龄是12岁的占参赛总人数的(1/3)，那么，除这些年龄外的参赛同学还有多少人？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/7) - (1/5) - (1/3)</gadget>
<output>34/105 = around 0.32381</output>

<gadget id="calculator">210 * (34/105)</gadget>
<output>68</output>

<result>68</result>