This may have been purposely executed to indicate "pairing" of numbers.
This is complex so don't jump the "gun"!
Firstly, the #s on the right hand side _ 331/331 _ 224/224
The threes and twos are paired off leaving the ones and fours to be paired off like in the same manner. (As below)
3311 _ 2244 (Now add)
= 5555 (The sum of the digits in the SOL = "55")
Next, the left hand side top # _ 257/257 (nothing actually paired off so I will pair them as above)
= 225577
5555 + 225577
= "231,132"
Bottom left/hs - 181/181 and top right/hs - 224/224
Pair; 118811 _ 2244 (Add)
= "121055"
121 * 55
= "6655" (Latitude of the Arctic and Antarctic Circles (+/-) Varies slightly.
121 + 55
= "176" ( Mathematical System as follows.)
17 + 76 + (67 + 71)
= "231"
More info. coming.