Kleen Karpet cleaned $65$ rugs in January, consuming the following resources $(4$ points$)$:

Labor:

$520$ hours at $$13$ per hour

Solvent: $,100$ gallons at $$5$ per gallon

Machine Rental: $20$ days at $$50$ per day

a$)$ What is the labor productivity $($i$.$e$.,$ single factor productivity$)$ per dollar?

b$)$ What is the multifactor productivity?