Lance, I've found the 1 u've sent to this forum b4. It looks like this:

f = factor

Adding...
A = 4.25 + 1.5
A = 425(f100) + 150(f100)
A = 675(f100)
A = 6.75

Multiplying...
X = 4.25 * 1.5
X = 425(f100) * 15(f10)
X = 425*15 (f100)*(f10)
X = 6375 (f1000)
X = 6.375

Dividing...
Y = 4.05 / 1.5
Y = 405(f100) / 15(f10)
Y = 405/15 (f100)/(f10)
Y = 17 (f10)
Y = 1.7

My question is how do you force the 8051 to do arithmetic in decimal? Do I need to convert these numbers into hex first? If so, does it affect my dot or floating point location? Is it possible to 'force' the 8051 to do decimal calculations? Any suggestions?