33A + 1A = 26A 16D * 3 = 3A 5A * 2 = 32A SUM1 SUM1 = 2D + 14D 7A * 2 = SUM1 25A ^ 2 = 8A 12A + 15D = 9A 6D * 7 = 11A REV 10D reverse = REV REV * 9 = 13A PROD1 6D * 20D = PROD1 PROD1 * 29D = 16A ZERO = 0 19A % 20D = ZERO 26A * 5 = 22A 1D + 28D = 27A 31A ^ 2 = 29A 25A + 27D = 30A 27A + 29D = 33A 50A 54 3 51A 57 3 1D + 50A = 51A DSM 16A digsum = DSM 2D digsum = DSM 5A * 24D = 3D 3A * 6 = 4D 8A + 29A = 5D 20D digprod = 6D 10D one dig is product of other two 29D digprod = 12D 5A + 14D = 2D 50D 4 3 51D 34 3 52D 45 3 53D 75 3 15D + 50D = 51D 25A + 20D = 16D 16D + 28D = 17D 16A * 7 = 18D 30A + 20D = 21D 52D + 53D = 23D 23D + 28D = 4D 6D digprod = 29D