I am trying to get a summary of duration for a particular resource within a particular month in smartsheet. This is unfortunately so that I can then input the hours into a custom ERP that lacks any intuitiveness. How could I do this? 
Here is an example
 
Resource .  Duration . Start Dates, End Dates
LD              2 days .   8/29         8/30
AD              1 day       8/29        8/29
LD               2 days .    8/31 .     9/1
AD .            0.5 days     9/1 .    9/1
 
Total August Days for LD: 3
Total September Days for LD: 1
Total August Days for AD: 1
Total September Days for AD: 0.5
 
Any help would be greatly appreciated.