3 ms·Mathematically, this is wrong.. a + b is not ab.by readme 14y agoMathematically, this is wrong.. a + b is not ab.xxbondsxx 14y agoIt's not symbolic...readme 14y agoOf course. I understand that "a" + "b" when taken to mean "concatenate the strings" is "ab" but OP's post was a calculator. It would not have yielded this result.