Speed of Light and the Age of the Universe (Score 1)

Maybe I'm a bit dense, but the math just doesn't work out for me. Age of our Universe: 13.75 Billion year Distance from this newly found galaxy to our galaxy: 13.1 Billion Light years Let's assume they are estimating the distance based on the current distance plus the speed our two galaxies are moving (based on the red shift). Wouldn't the two galaxies need to be separating at nearly the speed of light to be 13.1 billion light years apart? Doesn't the mass of the two galaxies prohibit them from moving that fast? By my journeyman calculations, each galaxy would need to be moving at ((13.1 / 13.75) / 2) or 47.6% of the speed of light to be 13.1 billion light years apart after 13.75 billion years. 47.6% of the speed of light is 318,729,600 mph or 513,604,000 kph.