Alright, let's solve this math problem step by step. First, we have the number 863. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 40. So, we're going to take the number 863 and add it to itself 40 times.
Step 1: 0 + 863 = 863
Step 2: 863 + 863 = 1726
Step 3: 1726 + 863 = 2589
Step 4: 2589 + 863 = 3452
Step 5: 3452 + 863 = 4315
Step 6: 4315 + 863 = 5178
Step 7: 5178 + 863 = 6041
Step 8: 6041 + 863 = 6904
Step 9: 6904 + 863 = 7767
Step 10: 7767 + 863 = 8630
Step 11: 8630 + 863 = 9493
Step 12: 9493 + 863 = 10356
Step 13: 10356 + 863 = 11219
Step 14: 11219 + 863 = 12082
Step 15: 12082 + 863 = 12945
Step 16: 12945 + 863 = 13808
Step 17: 13808 + 863 = 14671
Step 18: 14671 + 863 = 15534
Step 19: 15534 + 863 = 16397
Step 20: 16397 + 863 = 17260
Step 21: 17260 + 863 = 18123
Step 22: 18123 + 863 = 18986
Step 23: 18986 + 863 = 19849
Step 24: 19849 + 863 = 20712
Step 25: 20712 + 863 = 21575
Step 26: 21575 + 863 = 22438
Step 27: 22438 + 863 = 23301
Step 28: 23301 + 863 = 24164
Step 29: 24164 + 863 = 25027
Step 30: 25027 + 863 = 25890
Step 31: 25890 + 863 = 26753
Step 32: 26753 + 863 = 27616
Step 33: 27616 + 863 = 28479
Step 34: 28479 + 863 = 29342
Step 35: 29342 + 863 = 30205
Step 36: 30205 + 863 = 31068
Step 37: 31068 + 863 = 31931
Step 38: 31931 + 863 = 32794
Step 39: 32794 + 863 = 33657
Step 40: 33657 + 863 = 34520

So, 863*40 = 34520