I was doing it in my head.
Yes, there is much more to the story : of how DeBoglie's U=c^2/v equation for the speed of matter waves got him posted to the "crazy aunt alice" catagory by Einstein and his relativists(nothing can exceed the speed of light). There is a momentum-c^2 loophole, not wormhole, LOOPHOLE wherein by "going" to 0 deg K locally(v=0)and using n/0=n-0=n and nx0=n+0=n, you can jump to c^2 line-momentum globally. E=mc^2=hw reduces to E=c^2=w. This is how aliens in UFOs get around so fast, covering 1 LY in 105 seconds(earth local). I can explain it still further if you like(in private post).