OK, let's work through this together. We're starting with 534 and we're going to multiply it by 31, which means we add 534 to itself 31 times.
Step 1: 0 + 534 = 534
Step 2: 534 + 534 = 1068
Step 3: 1068 + 534 = 1602
Step 4: 1602 + 534 = 2136
Step 5: 2136 + 534 = 2670
Step 6: 2670 + 534 = 3204
Step 7: 3204 + 534 = 3738
Step 8: 3738 + 534 = 4272
Step 9: 4272 + 534 = 4806
Step 10: 4806 + 534 = 5340
Step 11: 5340 + 534 = 5874
Step 12: 5874 + 534 = 6408
Step 13: 6408 + 534 = 6942
Step 14: 6942 + 534 = 7476
Step 15: 7476 + 534 = 8010
Step 16: 8010 + 534 = 8544
Step 17: 8544 + 534 = 9078
Step 18: 9078 + 534 = 9612
Step 19: 9612 + 534 = 10146
Step 20: 10146 + 534 = 10680
Step 21: 10680 + 534 = 11214
Step 22: 11214 + 534 = 11748
Step 23: 11748 + 534 = 12282
Step 24: 12282 + 534 = 12816
Step 25: 12816 + 534 = 13350
Step 26: 13350 + 534 = 13884
Step 27: 13884 + 534 = 14418
Step 28: 14418 + 534 = 14952
Step 29: 14952 + 534 = 15486
Step 30: 15486 + 534 = 16020
Step 31: 16020 + 534 = 16554

So, 534*31 = 16554