[AccessD] Math equations

Does anyone know a way to implement "dynamic" math equations in Access?  I am implementing a system 
for building up strings of verbiage for mail merge letters.  The verbiage is dependent on the 
insurer of a loan and the state that the loan is in.  For example it might say something like

"Please Bid $X."  X is the result of an equation that may be something like

X = the greater of FMV or MakeWhole but X must be at least 2/3 TotalDebt.

Or it may say something like X = Y% * FMV or TotalDebt whichever is less, where Y% comes from the 
insurer table, i.e. Y is 80% for insurer A, 90% for insurerB and 100a% for InsurerC.

The equations can depend on the state but also a % figure taken from the insurer.

There are 51 states and 5 insurers so there are a ton of possible combinations / equations.  All of 
which comes from a spreradsheet of text "descriptions" for each insurer for each state which I am 
supposed to somehow compute.

The old system just used a slew of hard coded equations in huge iif() statements, embedded directly 
in fields in queries.

ICK!

I would prefer to somehow map this to a small(er)  set of equations with values fed in from the 
state and insurer tables.  The verbiage strings would be stored in the state table, possibly a 
state/insurer table. where the verbiage is in the table with replaceable symbols in the string.  I 
could pull the string out of the table, look for X and run a math function to figure out X and 
substitute the literal X (or other "replaceable character" ) with some dollar amount.

And finally I would like to avoid VBA code if possible.  The intent is to eventually move these out 
of Access so if the solution mapped easily into C# that would be good.

I have never really seen anything like this implemented (table driven) and I am drawing a blank on 
how to go about it, particularly without resorting to custom VBA functions.  In the end VBA 
functions are preferable to IIF() statements in custom Access queries.  I could at least "port" VBA 
to C# later.

-- 
John W. Colby

Reality is what refuses to go away
when you do not believe in it