Question about pdf materials for this lecture

Hi! There are supporting materials for this lecture, and the file "Company valuation - course notes" is among them. On slide 5 there is something wrong with calculating deltas. Also I didn't get about non-operating assets. On slide it is stated that non-operating assets should be included in calculating enterprise value. Yet on lecture 11 (the last in section 1) in the video we add non-operating assets to enterprise value to obtain equity value. So, could you please clear for me, when we account those assets?