Hire a three person staff and you're set. On the salary, you might want to raise that a bit.
- you're assuming the 3 person you're hiring are women
- the people you hire only work for slices of time in a day
What's gone "wrong" is in the 70s women were still fighting for ERA and were significantly more dependent on their husband. Being in a half-slave status providing for their family 24/7 with nowhere else to go was more of a norm.
If men are more effective than women why are women today more than three times worse at being housewives than they were in the 70s?
Getting paid 10 times the average US wage is a very funny definition of slavery.