1234+1234-12345-12345=?

1234+1234-12345-12345=? 1234 1234%^&*()?., 1234 1234 1234 123+1234+12345+123456 1234+1234=1234, 1432*1234×1234 123 123 1234 1234 123+1234+1234=? 1234 ,1234 为什么像首歌 1234*909+1234*9090 1234*9090+1234*909 1234+12345+123456+1234567+12345678= 123+1234+12345+123456+1234567+12345678+123456789 ( 1+12+123+1234+12345++++3%)￥ 1+12+123+1234+12345+******+123456789＝?