Counting digits and deleting them

[1ExcelUser]

Hi, I would like to remove some digits from a string of numbers. The numbers are always 17 digits and I would like to have certain numbers removed. For instance, if the number was 1XSFZ8ET6BKE57365.
I would want to keep the first 8 digits erase the 9th keep the 10th and 11th and remove the rest.
So 1XSFZ8ET6BKE57365 would translate into 1XSFZ8ETBK.
The list of numbers would be in column A and the results could be in any column to the right.
Any thoughts?
Thank you,
1ExcelUser

 

[Asala42]

Well a formula doing this would have to be able to map out every pattern you need. But in the example's case of "Combine the first 8 characters with the 10th & 11th characters from a string", you could use:

=LEFT(A2,8)&MID(A2,10,2)