Evaluate
620.285-\sqrt{3}\approx 618.552949192
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614.125+1.16-\sqrt{3}+5
Calculate 8.5 to the power of 3 and get 614.125.
615.285-\sqrt{3}+5
Add 614.125 and 1.16 to get 615.285.
620.285-\sqrt{3}
Add 615.285 and 5 to get 620.285.
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