How add SUBtotals to a large Excel spreadsheet

How can I have Excel calculate SubTotals on a spreadsheet ... something like this:

Cars           2
Cars           5
Cars           8        15
Trucks       3
Trucks       1
Trucks       2
Trucks       7        13

I have the first 2 columns, and want Excel to calculate the 15, 13, etc.
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Dustin SaundersDirector of OperationsCommented:
Assuming your names are in column A and your values are in column B you can combine IF() and SUMIF() to get this result.

First we check if the value in A is the same as the value below it.  If not, then we sum all values if the name matches.

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propagated to each row would do the trick.

Sample excel attached.

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bleggeeAuthor Commented:
Worked like a charm!
Thank you.
Rob HensonFinance AnalystCommented:
In addition to above suggestion, have you seen the SUBTOTAL feature on the Data Group tab.

You can tell excel to look for a change in a particular column of your data and add a subtotal (count or sum and others) to another column.

This will insert a row below each set of data and will populate this new row with the subtotal formula. It will also add grouping to the sheet so you can expand or collapse each set individually or expand/collapse all sets to a specific level at the same time.

bleggeeAuthor Commented:
Thanks for the suggestion Rob! I'll take a look at that as well.

- B
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