If you buy 50 monkeys you can do 50 pressure washing jobs a day. If you train the monkey to drive you don't even have to do the transportation, just supply the vehicle and pressure washer

At 50 jobs a day for $100 you could make $5,000 a day with 0 effort

Or to cut out the vehicle and insurance costs you could order a Uber for each job, remove some of your overhead and increase profits. I think Uber drivers are required to transport animals now