OK, let's work through this together. We're starting with 328 and we're going to multiply it by 18, which means we add 328 to itself 18 times.
Step 1: 0 + 328 = 328
Step 2: 328 + 328 = 656
Step 3: 656 + 328 = 984
Step 4: 984 + 328 = 1312
Step 5: 1312 + 328 = 1640
Step 6: 1640 + 328 = 1968
Step 7: 1968 + 328 = 2296
Step 8: 2296 + 328 = 2624
Step 9: 2624 + 328 = 2952
Step 10: 2952 + 328 = 3280
Step 11: 3280 + 328 = 3608
Step 12: 3608 + 328 = 3936
Step 13: 3936 + 328 = 4264
Step 14: 4264 + 328 = 4592
Step 15: 4592 + 328 = 4920
Step 16: 4920 + 328 = 5248
Step 17: 5248 + 328 = 5576
Step 18: 5576 + 328 = 5904

So, 328*18 = 5904