I know I can use the code below to clear data from a range, but I need to
clear data from rng(1, 43) through rng(1, 125). Is there any way to do that
without having to write a line for each rng to be cleared?

Sub ClearData()

Dim rng
Set rng = Cells(ActiveCell.Row, 1)

rng(1, 43).Value = ""

End Sub