Stage 1
What height is written on the cross at approximately head height? (3 digits) = A
The number is gone. A=824
Stage 2
On the door of the cottage is a white cross. In the center of the cross are letters.
B=Number of letters
Stage 3
On the window side, a stovepipe is mounted on a metal plate
How many screws are used to fix the plate? = C
Final
N36° 49.090+A E27° 12.163+(B*C)