1) 37218+63218 = 100218 = 218002) 56843-56643 = 243 = 863) 417187+417213 = 417400 = 1668004) 52187-4352-5244 = 52*91 = 4732
1) 37218+63218 = 100218 = 21800
2) 56843-56643 = 243 = 86
3) 417187+417213 = 417400 = 166800
4) 52187-4352-5244 = 52*91 = 4732