$ bc -l <<< 2^16
  65536
  $ bc -l <<< 2*16
  32
  $ bc -l <<< 2+16
  18

    $ units -t "sqrt(3^2 + 4^2)"
    5
    $ units -t "forty rods per hogshead" "miles per usgallon"
    0.0019825576
    $ units -t "32GB / (1MB/s)" "hours; minutes"
    8;53.333333