Looking to extract data from a text field

I would use the Part function, as well as some Left function. Would be a long code, but repetitive so not too bad. 

So your field that is extracting your 9 or 16 would look like this

var text TaxYear = [Tax Year Field];

var text SummaryField = ToText([The Summary Field]); //this only needs the ToText if it is a combined text field or something other than text

var text PartOneSummary = Trim(Part($Summary, 1, ";" ));
var text PartTwoSummary = Trim(Part($Summary, 2, ";" ));
.
.
var text PartThirtySummary = Trim(Part($Summary, 30, ";" ));

If(
contains($PartOneSummary, $TaxYear), Left(PartOneSummary, "/"),
contains($PartTwoSummary, $TaxYear), Left(PartTwoSummary, "/"),
.
.
contains($PartThirtySummary, $TaxYear), Left(PartThirtySummary, "/")
)

------------------------------
Mike Tamoush
------------------------------