OK, let's work through this together. We're starting with 281 and we're going to multiply it by 30, which means we add 281 to itself 30 times.
Step 1: 0 + 281 = 281
Step 2: 281 + 281 = 562
Step 3: 562 + 281 = 843
Step 4: 843 + 281 = 1124
Step 5: 1124 + 281 = 1405
Step 6: 1405 + 281 = 1686
Step 7: 1686 + 281 = 1967
Step 8: 1967 + 281 = 2248
Step 9: 2248 + 281 = 2529
Step 10: 2529 + 281 = 2810
Step 11: 2810 + 281 = 3091
Step 12: 3091 + 281 = 3372
Step 13: 3372 + 281 = 3653
Step 14: 3653 + 281 = 3934
Step 15: 3934 + 281 = 4215
Step 16: 4215 + 281 = 4496
Step 17: 4496 + 281 = 4777
Step 18: 4777 + 281 = 5058
Step 19: 5058 + 281 = 5339
Step 20: 5339 + 281 = 5620
Step 21: 5620 + 281 = 5901
Step 22: 5901 + 281 = 6182
Step 23: 6182 + 281 = 6463
Step 24: 6463 + 281 = 6744
Step 25: 6744 + 281 = 7025
Step 26: 7025 + 281 = 7306
Step 27: 7306 + 281 = 7587
Step 28: 7587 + 281 = 7868
Step 29: 7868 + 281 = 8149
Step 30: 8149 + 281 = 8430

So, 281*30 = 8430