Without delay, let's solve this. We've got 192 and we will be multiplying it by 42, that is, adding 192 to itself 42 times.
Step 1: 0 + 192 = 192
Step 2: 192 + 192 = 384
Step 3: 384 + 192 = 576
Step 4: 576 + 192 = 768
Step 5: 768 + 192 = 960
Step 6: 960 + 192 = 1152
Step 7: 1152 + 192 = 1344
Step 8: 1344 + 192 = 1536
Step 9: 1536 + 192 = 1728
Step 10: 1728 + 192 = 1920
Step 11: 1920 + 192 = 2112
Step 12: 2112 + 192 = 2304
Step 13: 2304 + 192 = 2496
Step 14: 2496 + 192 = 2688
Step 15: 2688 + 192 = 2880
Step 16: 2880 + 192 = 3072
Step 17: 3072 + 192 = 3264
Step 18: 3264 + 192 = 3456
Step 19: 3456 + 192 = 3648
Step 20: 3648 + 192 = 3840
Step 21: 3840 + 192 = 4032
Step 22: 4032 + 192 = 4224
Step 23: 4224 + 192 = 4416
Step 24: 4416 + 192 = 4608
Step 25: 4608 + 192 = 4800
Step 26: 4800 + 192 = 4992
Step 27: 4992 + 192 = 5184
Step 28: 5184 + 192 = 5376
Step 29: 5376 + 192 = 5568
Step 30: 5568 + 192 = 5760
Step 31: 5760 + 192 = 5952
Step 32: 5952 + 192 = 6144
Step 33: 6144 + 192 = 6336
Step 34: 6336 + 192 = 6528
Step 35: 6528 + 192 = 6720
Step 36: 6720 + 192 = 6912
Step 37: 6912 + 192 = 7104
Step 38: 7104 + 192 = 7296
Step 39: 7296 + 192 = 7488
Step 40: 7488 + 192 = 7680
Step 41: 7680 + 192 = 7872
Step 42: 7872 + 192 = 8064

So, 192*42 = 8064