What formula used here?

In this report on page 10, he uses ROIC to compute P/E. Can someone let me know what formula he is using to compute this table?

https://doc.research-and-analytics.csfb.com/docView?language=ENG&format=PDF&source_id=em&document_id=805915460&serialid=b3Wu0sLSCMh00cBXg5ql%2Fa4nh5XcibIeQg7OZgs4w68%3D