I like to work with shares/membership units. I calculate how long I have been working on the product and at what speed. Suppose a year at half time (4 hs a day

I like to work with shares/membership units. I calculate how long I have been working on the product and at what speed. Suppose a year at half time (4 hs a day), then if I make a deal to work 4 hs a day for another year and a partner does the same, I would get 2/3 and they 1/3. Reevaluating at the end of the period.