Timers, Countdown

I'm trying to set up a timer.. so that it will take numbers from onearea that has words with it, but bi want it to add the numbers ... at the moment.. it just puts 434554 it just puts the numbers together.. it doesn't count down.. it doesn't add it up ... i need to figure out how to get the numbers to add up, and then count down... how do i do that? i can't figure out the formula to add up different Fields... Please help???!!!?