Please explain everything on how to calculate this including steps to type into the financial calculator.

Losses on Subprime portfolios Losses on Senior Tranche of ABS Losses on Mezzanine Tranche of ABS Losses on Equity Tranche of ABS Losses on Equity Tranche of ABS CDO Losses on Mezzanine Tranche of ABS CDO Losses on Senior Tranche of ABS CDO 10% 15% 20% 25% Losses on Subprime portfolios Losses on Senior Tranche of ABS Losses on Mezzanine Tranche of ABS Losses on Equity Tranche of ABS Losses on Equity Tranche of ABS CDO Losses on Mezzanine Tranche of ABS CDO Losses on Senior Tranche of ABS CDO 10% 15% 20% 25%