hi , I've a problem on a formula to add zero's in between two numbers, like

if A1 16225 & B1 22546 =CONCATENATE(A1,REPT(0,9-LEN(A1)),B1) Result = 1622500022546

the problem is when i need total 13 numbers

if A1 16225 & B1 22546 =CONCATENATE(A1,REPT(0,9-LEN(A1)),B1) Result = 162250002546

Result 162200022546
16220002456

instead i need 162200022546
162200002456

Help guys!

Sorry for mistakes, Thanks in advance.