>perl -e "print 10.6 + 15.6 + 25.6"
51.8 (Unrounded)
>perl -e "print 11 + 16 + 26"
53 (Conventional, delta = 1.2)
>perl -e "print 11 + 16 + 26"
53 (Banker's, delta = 1.2)