My contract account startup capital is 1000 USDT. The personal plan is to allocate 3% to 8% of the margin each time I open a position, with 20x leverage. Let's see what the monthly yield can be with this approach. What is the annualized return?

Each time I double the position, it is considered a phase goal.
First doubling: 1000 x 2 = 2000
Second doubling: 2000 x 2 = 4000
Third doubling: 4000 x 2 = 8000
Fourth doubling: 8000 x 2 = 16000
Fifth doubling: 16000 x 2 = 32000
Sixth doubling: 32000 x 2 = 64000
Seventh doubling: 64000 x 2 = 128000
Eighth doubling: 128000 x 2 = 256000
Ninth doubling: 256000 x 2 = 512000
Tenth doubling: 512000 x 2 = 1024000