Let's roll up our sleeves and solve this. We have 244 and we're going to multiply it by 64, essentially adding 244 to itself 64 times.
Step 1: 0 + 244 = 244
Step 2: 244 + 244 = 488
Step 3: 488 + 244 = 732
Step 4: 732 + 244 = 976
Step 5: 976 + 244 = 1220
Step 6: 1220 + 244 = 1464
Step 7: 1464 + 244 = 1708
Step 8: 1708 + 244 = 1952
Step 9: 1952 + 244 = 2196
Step 10: 2196 + 244 = 2440
Step 11: 2440 + 244 = 2684
Step 12: 2684 + 244 = 2928
Step 13: 2928 + 244 = 3172
Step 14: 3172 + 244 = 3416
Step 15: 3416 + 244 = 3660
Step 16: 3660 + 244 = 3904
Step 17: 3904 + 244 = 4148
Step 18: 4148 + 244 = 4392
Step 19: 4392 + 244 = 4636
Step 20: 4636 + 244 = 4880
Step 21: 4880 + 244 = 5124
Step 22: 5124 + 244 = 5368
Step 23: 5368 + 244 = 5612
Step 24: 5612 + 244 = 5856
Step 25: 5856 + 244 = 6100
Step 26: 6100 + 244 = 6344
Step 27: 6344 + 244 = 6588
Step 28: 6588 + 244 = 6832
Step 29: 6832 + 244 = 7076
Step 30: 7076 + 244 = 7320
Step 31: 7320 + 244 = 7564
Step 32: 7564 + 244 = 7808
Step 33: 7808 + 244 = 8052
Step 34: 8052 + 244 = 8296
Step 35: 8296 + 244 = 8540
Step 36: 8540 + 244 = 8784
Step 37: 8784 + 244 = 9028
Step 38: 9028 + 244 = 9272
Step 39: 9272 + 244 = 9516
Step 40: 9516 + 244 = 9760
Step 41: 9760 + 244 = 10004
Step 42: 10004 + 244 = 10248
Step 43: 10248 + 244 = 10492
Step 44: 10492 + 244 = 10736
Step 45: 10736 + 244 = 10980
Step 46: 10980 + 244 = 11224
Step 47: 11224 + 244 = 11468
Step 48: 11468 + 244 = 11712
Step 49: 11712 + 244 = 11956
Step 50: 11956 + 244 = 12200
Step 51: 12200 + 244 = 12444
Step 52: 12444 + 244 = 12688
Step 53: 12688 + 244 = 12932
Step 54: 12932 + 244 = 13176
Step 55: 13176 + 244 = 13420
Step 56: 13420 + 244 = 13664
Step 57: 13664 + 244 = 13908
Step 58: 13908 + 244 = 14152
Step 59: 14152 + 244 = 14396
Step 60: 14396 + 244 = 14640
Step 61: 14640 + 244 = 14884
Step 62: 14884 + 244 = 15128
Step 63: 15128 + 244 = 15372
Step 64: 15372 + 244 = 15616

So, 244*64 = 15616