DataType question.

I am not certain of what to set the field type to for 2 seperate fields that are used in a calculation.  The problem is that with the current setup, the result of the calculation is rounding UPWARDS, so I believe it could just be:

1.  The precision and scale of the numeric field
2.  Not properly CAST in the T-SQL statement.

Tbl1
field1 (numeric(18,2)
0.90

Tbl2
field1 (numeric(18,2)
64.45

So, the result is

64.45 * 0.90 = 58.01

I am expecting a result of: 58.00

edit: Expecting the result of 58.00 in a 3rd field set up as numeric(18,2)

What would be the proper datatype, precision and scale for the field1 fields to produce the desired output of 58.00?

Thanks

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jfc