How to multiply odd array row (first) by third?

Question

Visual Basic

Hi all.
I have an array of 3 columns 4 rows.
How to multiply the 1st row by the 3rd?

Private Sub CommandButton1_Click()
Dim A() As Single
Dim n As Single
Dim m As Single
Dim i As Single
Dim j As Single

n = InputBox("×èñëî ñòðîê")
m = InputBox("×èñëî ñòîëáöîâ")

ReDim A(n, m)
For i = 1 To n
For j = 1 To m
    A(i, j) = InputBox("Ââåäèòå ýëåìåíò ìàòðèöû")
    Label1.Caption = Label1.Caption & A(i, j) & vbTab
Next j
    Label1.Caption = Label1.Caption & vbNewLine
Next i
For i = 1 To n Step 2
For j = 1 To m
    A(i, j) = A(i, j) * A(i, j)
    Label1.Caption = Label1.Caption & A(1, i) & vbTab
Next j
Next i
End Sub

There is such a script. I don't understand how to select the first row and multiply by the odd third. I understand that I need to take an odd step. I'm right?