going off of the assumption that mark and helly have known each other for 1 month, and that mark is 42 (born in 1978 with the show taking place in 2020), mark and helly's time knowing each other translates to almost two years in the life of mark scout.
2 years of mark s being alive = he's known helly for 4.16% of his life.
4.16% of mark scout's life is 21 months.











