Alright, let's solve this math problem step by step. First, we have the number 401. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 64. So, we're going to take the number 401 and add it to itself 64 times.
Step 1: 0 + 401 = 401
Step 2: 401 + 401 = 802
Step 3: 802 + 401 = 1203
Step 4: 1203 + 401 = 1604
Step 5: 1604 + 401 = 2005
Step 6: 2005 + 401 = 2406
Step 7: 2406 + 401 = 2807
Step 8: 2807 + 401 = 3208
Step 9: 3208 + 401 = 3609
Step 10: 3609 + 401 = 4010
Step 11: 4010 + 401 = 4411
Step 12: 4411 + 401 = 4812
Step 13: 4812 + 401 = 5213
Step 14: 5213 + 401 = 5614
Step 15: 5614 + 401 = 6015
Step 16: 6015 + 401 = 6416
Step 17: 6416 + 401 = 6817
Step 18: 6817 + 401 = 7218
Step 19: 7218 + 401 = 7619
Step 20: 7619 + 401 = 8020
Step 21: 8020 + 401 = 8421
Step 22: 8421 + 401 = 8822
Step 23: 8822 + 401 = 9223
Step 24: 9223 + 401 = 9624
Step 25: 9624 + 401 = 10025
Step 26: 10025 + 401 = 10426
Step 27: 10426 + 401 = 10827
Step 28: 10827 + 401 = 11228
Step 29: 11228 + 401 = 11629
Step 30: 11629 + 401 = 12030
Step 31: 12030 + 401 = 12431
Step 32: 12431 + 401 = 12832
Step 33: 12832 + 401 = 13233
Step 34: 13233 + 401 = 13634
Step 35: 13634 + 401 = 14035
Step 36: 14035 + 401 = 14436
Step 37: 14436 + 401 = 14837
Step 38: 14837 + 401 = 15238
Step 39: 15238 + 401 = 15639
Step 40: 15639 + 401 = 16040
Step 41: 16040 + 401 = 16441
Step 42: 16441 + 401 = 16842
Step 43: 16842 + 401 = 17243
Step 44: 17243 + 401 = 17644
Step 45: 17644 + 401 = 18045
Step 46: 18045 + 401 = 18446
Step 47: 18446 + 401 = 18847
Step 48: 18847 + 401 = 19248
Step 49: 19248 + 401 = 19649
Step 50: 19649 + 401 = 20050
Step 51: 20050 + 401 = 20451
Step 52: 20451 + 401 = 20852
Step 53: 20852 + 401 = 21253
Step 54: 21253 + 401 = 21654
Step 55: 21654 + 401 = 22055
Step 56: 22055 + 401 = 22456
Step 57: 22456 + 401 = 22857
Step 58: 22857 + 401 = 23258
Step 59: 23258 + 401 = 23659
Step 60: 23659 + 401 = 24060
Step 61: 24060 + 401 = 24461
Step 62: 24461 + 401 = 24862
Step 63: 24862 + 401 = 25263
Step 64: 25263 + 401 = 25664

So, 401*64 = 25664