Answer here only the longitude (west/east) of
your place of residence using geographic goordinate system (GCS) (in this picture -0.152950)
write it down using same format as map below! Use dot please.
An
easy way to get coordinates is Google Maps. On your phone, press
briefly on the desired point on the map and you will see the
coordinates. On the computer, double-click on the desired spot and you
will get the coordinates.
(Note
you don't have to use your street adress)