"Though your beginning was small, yet your latter end would greatly increase." – Job 8:7
Here's your penny doubled for 30 days chart:
Day Amount ($)
1 0.01
2 0.02
3 0.04
4 0.08
5 0.16
6 0.32
7 0.64
8 1.28
9 2.56
10 5.12
11 10.24
12 20.48
13 40.96
14 81.92
15 163.84
16 327.68
17 655.36
18 1,310.72
19 2,621.44
20 5,242.88
21 10,485.76
22 20,971.52
23 41,943.04
24 83,886.08
25 167,772.16
26 335,544.32
27 671,088.64
28 1,342,177.28
29 2,684,354.56
30 5,368,709.12
Notice how the big money all happens at the very end — on day 25 you don't even have $200K, but five days later you're at $5.3M.