228% per year does not describe or account for any of that.
but I'm beginning to understand how the liberals do the budget
mathematically the formula used by that calculator is fine. ROIs does not calculate an average return per year. It's discounted return over the life of an investment. Averages are troublesome to deal with - that's why families have 1.3 children on average, for example. There is a considerable argument whether a house is an investment. My house is worth around 70k. The land is worth well over 1.5 million. If I sold the house I need another place to live.
My father sold that house in 2011 after my Mother passed away for around 360k. What does that say about your 9%? What's the ROI over 12 years on return of 1.24 million on an invest of 360K?
I'd like to add something, on topic even, that the Golden Age of Steelheading ended around 1960.