The initial coordinates take you to an important point in the history of the area. To find out the location of the cache you should first find out the value of A from these coordinates.
Now, read the information sign and mark the following figures:
B = Number of letters in the first word of the sign.
C = The largest integer in the sign.
The cache is hidden in:
N 60° 10.(A*B*C/59.7)'
E 024° 51.(3*C/(B*B*A))'