i need more help. each town is split into subset areas called "sa1's" so a town can have 100's of SA1's each with a population of 200-800. Once ive predicted the population of the entire town, how can i use this to predict the population of each SA1 region? In each SA1 region, the population is also split into age bands, so "<15","15-19"...">85". How do i predict the population in each age band for each SA1? i will also need a definitive way to predict the revenue based on customer data from previous years