In the "I Love Mom" essay contest held by the school, 35 students from the fifth grade participated. The number of participants in the fourth grade is (4/7) the number of participants in the fifth grade and (5/9) the number of participants in the sixth grade. How many sixth graders are participating?
在学校举行的"我爱妈妈"的征文比赛活动中，五年级有35个同学参赛．四年级参赛人数是五年级参赛人数的(4/7)，是六年级参赛人数的(5/9)．六年级有多少个同学参赛？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(4/7) / (5/9)</gadget>
<output>36/35 = around 1.028571</output>

<gadget id="calculator">35 * (36/35)</gadget>
<output>36</output>

<result>36</result>