456 plus what equals 1242.\
pi + (456 x (234x78)) = 8322915.142.
x=0
456 plus 100 is equal to 556
123 + 456 + 7890 = 8469
2222194848...I think. And yes I did just do that in my head :D
456 x 1000 = 456000
4002 + 456 = 4458
898 + 456 = 1354
66 + 456 = 522
777568 + 456 = 778024
456 + 312 = 768
789 + 456 = 1245