Will Zillow's home-buying calculator add up?

New York

THE real estate industry has spent the better part of the last decade worrying about the buying habits of millennials. Their preference for big cities, tendency to marry later, and bulging student debt are sometimes blamed for the generation's slow entry into the housing market.

Now that millennials have gained a toehold in the US housing market, Zillow Group Inc has come up with a new way to sell them homes - a little help with the math.