multiply() Formula returns 0.00 after save?

Hi,

I am trying to create a new field that is a currency data type.  I have selected "Calculated Value" and input the formula, multiply($tiv_c,.0025). 

The formula works when I am editing/creating a record, and it displays the correct output.  However, when I hit save, it immediately defaults to 0.00.  I have tried using the floor() function to drop any decimals but no success.  Perhaps, I am not using the floor() function correctly?

This is the floor function I attempted to use floor(multiply($tiv_c,.0025))

the $tiv_c field is also a input currency data type.  Both are required fields, and even though my calculated field defaults to 0.00 it will still allow me to save.

Any suggestions?