SOLUTION: How many 9 are sandwiched between the first 6 & the last 7 in 696996676979669779667

I'll put an X under every 9, like this: 

696996676979669779667
 X XX    X X  X  X

Now I just need to count the X's, like this:

one, two, three, four, five, six, seven.

So the answer is seven, which is the same as 7.

Since you needed help with that, I'm guessing
that you are in kindergarten just learning to count.

Edwin