The 7 must-know numbers of the week, starting with The Block ratings

The average number of viewers who watched the premiere of The Block 2012. This is up from last year's 1,342,000 who watched the first show of The Block 2011.

The number of years the Eiger Chalet at Perisher in the NSW ski fields has been owned by its original owners, who have now put the property up for sale.

The price paid for the last piece of land due to be developed by the late Gold Coast property developer Brian Ray, which sold under the hammer this week. 

The standard variable mortgage rate being offered by Collins Home Loans. This is currently the cheapest standard variable mortgage rate being offered by banks or non-bank lenders in Australia.

The minimum number of stories a new development in inner Melbourne or Sydney should have, according to Meriton boss Harry Triguboff. "In inner-city areas we need to recognise that five-to six-storey apartments are uneconomical," Triguboff says.

The price hopes Ryan "Toadie" Moloney had for his Malvern East home, which sold this week. The sale price has not been disclosed.

The height of a new skyscraper planned for the Queensbridge Hotel site in Southbank. When complete, the tower will be the second-tallest residential building in Melbourne.