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$\dfrac {12 + 144 + 20 + 3 \sqrt 4} 7 + \left({5 \times 11}\right) = 9^2 + 0$
A dozen, a gross, and a score
Plus three times the square root of four
Divided by seven
Plus five times eleven
Is nine squared and not a bit more.
-- Leigh Mercer

My cat, mathematically-trained,
Says "Your topology's too coarse-grained,
Quantum mechanics
Sends you into blind panics
Because you're not well-enough brained."

Three thousand, four hundred and sixty
Five million, six hundred and fifty
Three thousand, six hun-
Dred and seventy one
Point four seven five six one three
-- Unknown attribution