1. EBITDAW was (58.3m) and 8.9m in H1 and H2 respectively (FY = 49.4m loss). 36.6m is EBITDAW normalised so the one-off adjustments are 36.6 + 49.4 = 86m.
2. I think you are confusing with P/E multiples otherwise I'm not sure how an EBITAW multiple for the company in isolation of its peers and the market would give you any indication whether it is fair value.