I want to build a pivot table that will give me totals...like this...

A B
MAJOR ZIP
Accounting 10002
Accounting 10003
Accounting 10003
Accounting 10005
Biology 10005
Biology 10005
Biology 10007

So I want to build a total that will look something like this...will
tell me how many accounting people are in zip 10003 etc.

MAJOR ZIP TOTAL
Accounting 10003 2
10002 1
10005 1
Biology 10005 2
10007 1

How would I build this total? I did a =COUNT(B1) but this did not
work...