Does this math meme make sense?

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[https://imgur.com/a/aiKWfXC](https://imgur.com/a/aiKWfXC)

I saw this meme posted on Facebook and I don’t understand. According to the comments, I am supposed to interpet this as 2\^18 = 262144, but why the square root? Also I thought that when it was a “power tower” of exponents like that, you worked from right to left, in which case it would be a ridiciously big number and certainly not be 262144?

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