For three consecutive odd numbers, the difference between the product of the last two numbers and the product of the first two numbers is 108, what is the largest number among these three numbers?
三个连续的奇数，后面两个数的积与前面两个数的积之差是108，那么这三个数中最大的数是多少．
<gadget id="calculator">27 + 2</gadget>
<output>29</output>

<result>29</result>