Tada,

$450 million from purchase of $4 billion,..

That doesn't jive with  BDZ's post:

The Royalty Preferred Shares entitle Zenith to cumulative preferential dividends in an amount ranging from 6% to 12% of Net Apo Revenue during any year, subject to an adjustment for tax payable on the dividend. The dividend amount is calculated based on 6% of Net Apo Revenue of up to US$1 billion, 8% of Net Apo Revenue of between US$1 billion and US$2 billion, 10% of Net Apo Revenue between US$2 billion and US$5 billion and 12% of Net Apo Revenue in excess of US$5 billion."