So im doing prayer right now. Im trying to find a site where I can type in my RSN and it will tell me my exp and also where I can find out how many more bones i need to get to an exact prayer level.
People really are lazy nowdays, its faster to just do a number crunch real fast, i believe its 252 xp per bone on a gilded altar, so grab your calculator and subtract your current total xp from your goal xp, (rather roughly know goal level's xp off hand or google it for the table), then divine the figure by 252 and you have how many bones you need.