I have data in an Excel spreadsheet with delimited strings. For simplicity, think of something like \"4#8#10\", with an arbitrary number of pieces.
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Just in case someone is looking to do the same but with Google Sheets, here's how I do it
Let's say A1 contains 4#8#10
=ARRAYFORMULA(SPLIT(A1, "#"))
That will create an array, and display the array entry in columns.
If you need the array to be shown in rows, you can use
=ARRAYFORMULA(TRANSPOSE(SPLIT(A1, "#")))
I wish there was a SPLIT formula in MS Excel..