Let's roll up our sleeves and solve this. We have 388 and we're going to multiply it by 30, essentially adding 388 to itself 30 times.
Step 1: 0 + 388 = 388
Step 2: 388 + 388 = 776
Step 3: 776 + 388 = 1164
Step 4: 1164 + 388 = 1552
Step 5: 1552 + 388 = 1940
Step 6: 1940 + 388 = 2328
Step 7: 2328 + 388 = 2716
Step 8: 2716 + 388 = 3104
Step 9: 3104 + 388 = 3492
Step 10: 3492 + 388 = 3880
Step 11: 3880 + 388 = 4268
Step 12: 4268 + 388 = 4656
Step 13: 4656 + 388 = 5044
Step 14: 5044 + 388 = 5432
Step 15: 5432 + 388 = 5820
Step 16: 5820 + 388 = 6208
Step 17: 6208 + 388 = 6596
Step 18: 6596 + 388 = 6984
Step 19: 6984 + 388 = 7372
Step 20: 7372 + 388 = 7760
Step 21: 7760 + 388 = 8148
Step 22: 8148 + 388 = 8536
Step 23: 8536 + 388 = 8924
Step 24: 8924 + 388 = 9312
Step 25: 9312 + 388 = 9700
Step 26: 9700 + 388 = 10088
Step 27: 10088 + 388 = 10476
Step 28: 10476 + 388 = 10864
Step 29: 10864 + 388 = 11252
Step 30: 11252 + 388 = 11640

So, 388*30 = 11640