Ann: FY18 Half Year Results Announcement Date, page-42

I feel like this company doesn't provide enough information to estimate their results. Even companies that provide detailed explanations which you can use to crosscheck their numbers often leaves me way out so I have given that stuff up.
The managers themselves don't always know and beyond that a single periods earnings don't affect the valuation much over the long term.
Going beyond that analysing and predicting results is what professional analysts do, to good effect in the short term and with laughable results over the long term.
There's no point trying to beat them at that game. Instead I would buy a company with good balance sheet and cashflows at a low price and react to results and new information as it comes to hand.