Delivery Technology Solutions, Inc. (DTSL)

[Deathsnapper]

Assuming it's consistent (it won't be) and you actually reinvest every dollar you make back into one the, again, doubles in 2-3 weeks (bad idea, considering the risks) it's

between: initial investment times (2^17) {this is for every 3 weeks} and initial investment times (2^26){this is for every 2 weeks}

which means between:
131072 and 67108864 (that's over 67 million) times your initial investment.

It's the same way you'd calculate interest, except assuming the interest was charging 100% every 2 or 3 weeks.

Obviously it's impossible (or extremely unlikely) for a number of reasons. The most obvious being that a $100 initial investment would rake in up to $6 billion, and if that weren't infeasible everybody would be doing it.

Another big reason is that you can't just throw such large sums into a stock without affecting the price heavily; it simply doesn't work that way.

It's really never that simple. You won't be able to "double your money every 2 to 3 weeks"; I mean it's "possible" but so extremely unlikely that you shouldn't really consider it.