1string + number = concatenated string
2
3number + number = the sum of both numbers
4
5string - number = the difference between (coerced string) and the number
6
7"" + 1 + 10 + 2 = (string) "1102"
8"1102" - 5 = (number) 1097
91097 + "8" = (string) "10798"