7=7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77,64, 91, 98, 105, 112, 118, 126, 133, 140, 147, 154, 161, 168, 175, 182, 189, 196, 203, 210, 217, 224, 231, 238, 245, 252, 259, 266, 273, 280, 287, 294, 301, 308, 315, 329, 336, 343, 350, 357, 364, 371, 378, 385, 392 56=,56, 112, 168, 224, 280, 336, 392 98=98, 196, 294, 392 M C M = 392