Question: equation value display format

the final value of an equation is displayed in the form of combination of many values like following

-503.3433660*1[3]^2-2068.935708*1[4]^2-591.1244880*1[4]*1[1]-443.3433660*1[1]^2

I prefer to display it identically just an absolute value like 5.66

please help me how do that

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