What is the sum of all natural numbers n that fit the inequality (7/18)<((N)/5)<(20/7).
所有适合不等式(7/18)＜((N)/5)＜(20/7)的自然数n之和为多少．
<gadget id="calculator">2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14</gadget>
<output>104</output>

<result>104</result>