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Erin McCoy's avatar
Erin McCoy
Copper Contributor
Jan 17, 2018
Solved

Formula help needed

I have a 15 digit number. All the numbers have to remain the same except for the 10th digit and the last digit. The 10th digit needs to go up 1 and the last digit needs to go up 7. If the last digit starts at a 7 and adding 7 makes it 14, the 1 in the 14 needs to be ignored so that the 14th number which is 9 always remains a 9.  What is the formula I need to generate the next numbers?

  • How about the 10th digit & the 9th digit?

     

    Assume your 15 digit number on Cell A1.

     

    If they act like 14th & 15th digit

    On Cell A2, type

    =LEFT(A1,9) & RIGHT(VALUE(MID(A1,10,1))+1,1) & MID(A1,11,4) & RIGHT(VALUE(RIGHT(A1,1))+7,1)

    Otherwise,

    =TEXT(VALUE(LEFT(A1,10))+1,"0000000000") & MID(A1,11,4) & RIGHT(VALUE(RIGHT(A1,1))+7,1)

     

     

     

2 Replies

  • Willy Lau's avatar
    Willy Lau
    Steel Contributor

    How about the 10th digit & the 9th digit?

     

    Assume your 15 digit number on Cell A1.

     

    If they act like 14th & 15th digit

    On Cell A2, type

    =LEFT(A1,9) & RIGHT(VALUE(MID(A1,10,1))+1,1) & MID(A1,11,4) & RIGHT(VALUE(RIGHT(A1,1))+7,1)

    Otherwise,

    =TEXT(VALUE(LEFT(A1,10))+1,"0000000000") & MID(A1,11,4) & RIGHT(VALUE(RIGHT(A1,1))+7,1)

     

     

     

    • Erin McCoy's avatar
      Erin McCoy
      Copper Contributor

      That worked. It was the first solution you posted.  Thanks!