The calculation is very simple and clear, if every week $100 is deposited in the DCA method, then at the end of the month, an investor's investment amount will be $400. 100 per month and at the end of one year the person's investment amount will be $4800. If that investor can invest $100 a week regularly and if he can do this investment for four to five years, his total capital will be close to half BTC. 

Assuming you invest 100 dollars every week as per DCA method in 5 year plan then at the end of 5 years your total investment (only capital) will be around 25 thousand dollars. 

The calculation I gave of 25 thousand dollars is only his capital and I believe if he can invest continuously for five years, his profit will be much higher. Investing $100 every week in the DCA method will be difficult for most investors so there is an easier solution for them. Those who find depositing $100 every week can invest as much as they want and increase their investment amount every week or every month.

For example, if an investor invests $50 this week, he plans to invest $55 to $60 next week. Investing in DCA method by planning in this way will only increase the investment amount of the investor and it is a deposit for the investor.