So if I'm not mistaken, I could have bought 2000 BTCs 4.5 years ago for 100 USD then and now I would have 0.8m USD?

Edit:

    >>> btc_count = Decimal("100") / Decimal("0.05")
    >>> int(btc_count)
    2000
    >>> float(btc_count * Decimal("400"))
    800000.0