hello guys, please how does one find or calculate the value of the longest number in the section labeled Subtest Level in the WAIS-III,

hello guys,

please how does one find or calculate the value of the longest number in the section labeled "Subtest Level" in the WAIS-III, where the client got correct in Digits Forward and in Digits Backwards. is there a specific procedure in calculating it. am i to use the raw scores or the scaled scores?

kindly help.

thanks.