VBA Macro To Sum By Number For Corresponding Week

I am interested in modifying the below code so that instead of a text output of "Assignment A (20), Assignment B (5)" it would output only the sum of the numbers "25" for the corresponding week. I believe that this will be more clear with an example, so I'm attaching a small sample which shows what my current output is and what I'd like it to be.

Private Sub RestructureHrs()
'Start of Restructure
Dim l As Long ' loop through rows
Dim m As Long 'loop through rows to find last occurrance of person
Dim lLastRow As Long
Dim sPerson As String
Dim sOffice As String
Dim j As Long 'loop through person
Dim k As Long 'loop through weeks
Dim sOutput As String
Dim sOutputPerPerson As String
Dim lNextRow As Long
lLastRow = Range("A" & Rows.Count).End(xlUp).Row
lNextRow = 2
For l = 2 To lLastRow
sPerson = Range("B" & l).Value
sOffice = Range("A" & l).Value
sOutputPerPerson = ""......................