OK, let's crack this. We're given 384 and our task is to multiply it by 20. Essentially, we'll be adding 384 to itself 20 times.
Step 1: 0 + 384 = 384
Step 2: 384 + 384 = 768
Step 3: 768 + 384 = 1152
Step 4: 1152 + 384 = 1536
Step 5: 1536 + 384 = 1920
Step 6: 1920 + 384 = 2304
Step 7: 2304 + 384 = 2688
Step 8: 2688 + 384 = 3072
Step 9: 3072 + 384 = 3456
Step 10: 3456 + 384 = 3840
Step 11: 3840 + 384 = 4224
Step 12: 4224 + 384 = 4608
Step 13: 4608 + 384 = 4992
Step 14: 4992 + 384 = 5376
Step 15: 5376 + 384 = 5760
Step 16: 5760 + 384 = 6144
Step 17: 6144 + 384 = 6528
Step 18: 6528 + 384 = 6912
Step 19: 6912 + 384 = 7296
Step 20: 7296 + 384 = 7680

So, 384*20 = 7680