I have a CSV from my Google Maps timeline and all the lattitude and longitude values look like this (just a string of numbers with no decimals). Is there a way to have QGIS read these values or a field calculator/python expression to add the decimal after the second number? I'm pretty inexperienced and not having much luck finding a solution.
explains that the coordinates are lat-long * 1E7 (hence the "E7" designation).
From that web page:
We can also easily convert latitudeE7 and longitudeE7 by dividing by 1e7. 481265044/1e7 becomes 48.1265044 and 116593258/1e7 is 11.6593258 giving us the coordinates 48.1265044, 11.6593258 which is 48°07'35.4"N 11°39'33.6"E.