OK, let's crack this. We're given 694 and our task is to multiply it by 31. Essentially, we'll be adding 694 to itself 31 times.
Step 1: 0 + 694 = 694
Step 2: 694 + 694 = 1388
Step 3: 1388 + 694 = 2082
Step 4: 2082 + 694 = 2776
Step 5: 2776 + 694 = 3470
Step 6: 3470 + 694 = 4164
Step 7: 4164 + 694 = 4858
Step 8: 4858 + 694 = 5552
Step 9: 5552 + 694 = 6246
Step 10: 6246 + 694 = 6940
Step 11: 6940 + 694 = 7634
Step 12: 7634 + 694 = 8328
Step 13: 8328 + 694 = 9022
Step 14: 9022 + 694 = 9716
Step 15: 9716 + 694 = 10410
Step 16: 10410 + 694 = 11104
Step 17: 11104 + 694 = 11798
Step 18: 11798 + 694 = 12492
Step 19: 12492 + 694 = 13186
Step 20: 13186 + 694 = 13880
Step 21: 13880 + 694 = 14574
Step 22: 14574 + 694 = 15268
Step 23: 15268 + 694 = 15962
Step 24: 15962 + 694 = 16656
Step 25: 16656 + 694 = 17350
Step 26: 17350 + 694 = 18044
Step 27: 18044 + 694 = 18738
Step 28: 18738 + 694 = 19432
Step 29: 19432 + 694 = 20126
Step 30: 20126 + 694 = 20820
Step 31: 20820 + 694 = 21514

So, 694*31 = 21514