numerization.org

direct numbers

ten prefixes

big prefixes

hundred

thousand

million

billion

trillion

Algorithm

1. sum<-0, multiplier<-1, tsum<-0. Start from right.
2. No tokens left? sum<-sum+(tsum * multiplier). Exit and return sum.
3. Is it a direct or a ten prefix? Then go to 4.
4. We are at a hundreds prefix. sum<-sum+(tsum * multiplier), tsum<-0, multiplier<-prefix value. Go left. Go to 2.
5. We are at a tens or a direct prefix. tsum<-tsum+prefix value. Go left. Go to 2.