A firm has an expected liability due in $6$ years of $320$ million dollars. The company's portfolio manager observes that in the current market conditions, the company can immunize this liability with a portfolio generating $4\mathrm{.}08\%$ rate of return, on a bond equivalent basis with semiannual compounding.

If the company can currently commit $$296$ million to support this liability, what is the dollar safety margin?

Enter answer in millions.