webgl-how-it-works.html: some poor rounding, one wrong number

[thatmichaelpark]

Rounding 0.8333... to 0.830 is not helpful. Please change the first circled column to 0.6667/-0.8333/0.6667 and the second circled column to 0.8333/0.0867/0.1667. Also, the 0.75 in the animation should be 0.83, no?