Making the Most Secure Door in Minecraft!

Today we make the most secure door in Minecraft - It has over 83 billion combinations, it is an 8x8 Piston Door, and it has the combination lock pre-installed into door itself. This huge piston door is a mad project with honey blocks, Minecraft 1.15 redstone techniques and large piston feed tapes.

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what does 5 million look like in minecraft?