Field Calculation SQL

would like to calculate field based on the entry in another i.e.;

field3 = field2 X field1

field1 field2 field3
10 2.5 25.00( =sum(field1*field2))

How do I go about this in the SQL DB itself, can it be done within field3?

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SQL Calculation

select distinct c.execno, c.month, c.year, ISNULL((s.shift* 7.17 * l.mainuph),0) AS Capacity, s.shiftdate
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left outer join execmaster e on e.execno = c.execno
left outer join model l on e.model = l.model
left outer join mainshift s on s.line = e.line
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order by s.shiftdate, c.year, c.month

after i have a join table. the higlighted part, when i put it in my asp page.can i just call out to do some other calculation. maybe that capacity i take it out to do some other calculation? is that possible?

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[code]
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