Find the following video title - Welcome to London - Look for the riddles to unusual places to visit in London - in the Puzzle Video Playlist
N 45 27.xxx, w 75 42.yyy
To calculate the final decimals for the North and West coordinates, fill in the blanks in the following sentences found in the video.
North - Water taxis and bustling riverside walkways allow residents and visitors alike to experience this dynamic daily.
xxx = (#letters) X (digital root) + 525
West - On a clear day, visitors can gaze across the horizon to spot famous landmarks up to forty kilometers away, including Windsor .
yyy = (#letters) X (digital root) + 412