OK, let's crack this. We're given 448 and our task is to multiply it by 84. Essentially, we'll be adding 448 to itself 84 times.
Step 1: 0 + 448 = 448
Step 2: 448 + 448 = 896
Step 3: 896 + 448 = 1344
Step 4: 1344 + 448 = 1792
Step 5: 1792 + 448 = 2240
Step 6: 2240 + 448 = 2688
Step 7: 2688 + 448 = 3136
Step 8: 3136 + 448 = 3584
Step 9: 3584 + 448 = 4032
Step 10: 4032 + 448 = 4480
Step 11: 4480 + 448 = 4928
Step 12: 4928 + 448 = 5376
Step 13: 5376 + 448 = 5824
Step 14: 5824 + 448 = 6272
Step 15: 6272 + 448 = 6720
Step 16: 6720 + 448 = 7168
Step 17: 7168 + 448 = 7616
Step 18: 7616 + 448 = 8064
Step 19: 8064 + 448 = 8512
Step 20: 8512 + 448 = 8960
Step 21: 8960 + 448 = 9408
Step 22: 9408 + 448 = 9856
Step 23: 9856 + 448 = 10304
Step 24: 10304 + 448 = 10752
Step 25: 10752 + 448 = 11200
Step 26: 11200 + 448 = 11648
Step 27: 11648 + 448 = 12096
Step 28: 12096 + 448 = 12544
Step 29: 12544 + 448 = 12992
Step 30: 12992 + 448 = 13440
Step 31: 13440 + 448 = 13888
Step 32: 13888 + 448 = 14336
Step 33: 14336 + 448 = 14784
Step 34: 14784 + 448 = 15232
Step 35: 15232 + 448 = 15680
Step 36: 15680 + 448 = 16128
Step 37: 16128 + 448 = 16576
Step 38: 16576 + 448 = 17024
Step 39: 17024 + 448 = 17472
Step 40: 17472 + 448 = 17920
Step 41: 17920 + 448 = 18368
Step 42: 18368 + 448 = 18816
Step 43: 18816 + 448 = 19264
Step 44: 19264 + 448 = 19712
Step 45: 19712 + 448 = 20160
Step 46: 20160 + 448 = 20608
Step 47: 20608 + 448 = 21056
Step 48: 21056 + 448 = 21504
Step 49: 21504 + 448 = 21952
Step 50: 21952 + 448 = 22400
Step 51: 22400 + 448 = 22848
Step 52: 22848 + 448 = 23296
Step 53: 23296 + 448 = 23744
Step 54: 23744 + 448 = 24192
Step 55: 24192 + 448 = 24640
Step 56: 24640 + 448 = 25088
Step 57: 25088 + 448 = 25536
Step 58: 25536 + 448 = 25984
Step 59: 25984 + 448 = 26432
Step 60: 26432 + 448 = 26880
Step 61: 26880 + 448 = 27328
Step 62: 27328 + 448 = 27776
Step 63: 27776 + 448 = 28224
Step 64: 28224 + 448 = 28672
Step 65: 28672 + 448 = 29120
Step 66: 29120 + 448 = 29568
Step 67: 29568 + 448 = 30016
Step 68: 30016 + 448 = 30464
Step 69: 30464 + 448 = 30912
Step 70: 30912 + 448 = 31360
Step 71: 31360 + 448 = 31808
Step 72: 31808 + 448 = 32256
Step 73: 32256 + 448 = 32704
Step 74: 32704 + 448 = 33152
Step 75: 33152 + 448 = 33600
Step 76: 33600 + 448 = 34048
Step 77: 34048 + 448 = 34496
Step 78: 34496 + 448 = 34944
Step 79: 34944 + 448 = 35392
Step 80: 35392 + 448 = 35840
Step 81: 35840 + 448 = 36288
Step 82: 36288 + 448 = 36736
Step 83: 36736 + 448 = 37184
Step 84: 37184 + 448 = 37632

So, 448*84 = 37632