Count to 10'000!

The game is as the title says, you simply have to post a number following the previous number that was posted prior to your comment.
1... 2... 3..., everyone knows how to count, no need to explain the rules in detail, but there are some criteria you should follow:

1. Post interval = 2 (you may post after 2 other posts).
2. Try to be as creative as possible. You may just write a simple letter, but either include an image representing the said number or design it in an interesting way, using the tools available to you when posting. You may also post math equations that would equal to the said number, or anything you can think of.
3. Only counting, no side messages, nothing else.

Let's begin!

1

2

3

F O U R

5

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4+4=8

9

50 ÷ 5 = 10