x←6 2 3 7 4
   y←9 3 5 8 0 5

   x ptimes y
54 36 63 130 88 101 86 47 35 20

   x ptimesa y
54J3.108624469E¯15 36J5.329070518E¯15 ...

   9 ○ x ptimesa y
54 36 63 130 88 101 86 47 35 20 7.105427358E¯15 0 0 0 0 0