The product of three adjacent odd numbers is a five-digit number. The first digit of this five-digit number is 6, and the last digit is 7. What is the sum of these three odd numbers?
三个相邻奇数的积是一个五位数，这个五位数的首位是6，末位是7，这三个奇数的和是多少．
<gadget id="calculator">39 + 41 + 43</gadget>
<output>123</output>

<result>123</result>