Can someone break down the meanings of the number sequence for arrows, for example:

300/70 0.350 9.4 433 278

exactly what do those numbers mean? I got the gpi (9.4) but cant seem to find out the other numbers meanings. And how to I figure total arrow weight. if these are tipped with 100 grain arrows what would the total weight be? The arrows are 28.25" Any help would be greatly appreciated!