Arithmetic Operations

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    read expr_math result=expr_math" | bc -l) rounded_num=result") echo "$rounded_num"

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    read expression
    printf "%.3f\n" $(echo "scale=4;$expression" | bc -l)
    
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    read exp

    value=exp" | bc -l) printf "%.3f\n" "$value"

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    !/bin/bash

    read a result=a"|bc -l) echo $result | xargs printf '%.3f\n'

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    !/bin/bash

    read -r expr

    value=expr" | bc -l)

    printf "%.3f\n" "$value"