Predict the output

num_arr=(1 2 3 4 5 6 7)
value=1
for i in ${num_arr[*]}
do
    if [ `expr $i % 2 ` -eq 0 ];then
 	value=`expr $value \* $i`
    else
	value=`expr $value \* $i`
    fi
done
echo $value 

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