Evaluate
2\sqrt{7222222222222222}\approx 169967317.1197595
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2\sqrt{7222222222222222}
Factor 28888888888888888=2^{2}\times 7222222222222222. Rewrite the square root of the product \sqrt{2^{2}\times 7222222222222222} as the product of square roots \sqrt{2^{2}}\sqrt{7222222222222222}. Take the square root of 2^{2}.
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