Alright, let's solve this math problem step by step. First, we have the number 868. 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 868 and add it to itself 40 times.
Step 1: 0 + 868 = 868
Step 2: 868 + 868 = 1736
Step 3: 1736 + 868 = 2604
Step 4: 2604 + 868 = 3472
Step 5: 3472 + 868 = 4340
Step 6: 4340 + 868 = 5208
Step 7: 5208 + 868 = 6076
Step 8: 6076 + 868 = 6944
Step 9: 6944 + 868 = 7812
Step 10: 7812 + 868 = 8680
Step 11: 8680 + 868 = 9548
Step 12: 9548 + 868 = 10416
Step 13: 10416 + 868 = 11284
Step 14: 11284 + 868 = 12152
Step 15: 12152 + 868 = 13020
Step 16: 13020 + 868 = 13888
Step 17: 13888 + 868 = 14756
Step 18: 14756 + 868 = 15624
Step 19: 15624 + 868 = 16492
Step 20: 16492 + 868 = 17360
Step 21: 17360 + 868 = 18228
Step 22: 18228 + 868 = 19096
Step 23: 19096 + 868 = 19964
Step 24: 19964 + 868 = 20832
Step 25: 20832 + 868 = 21700
Step 26: 21700 + 868 = 22568
Step 27: 22568 + 868 = 23436
Step 28: 23436 + 868 = 24304
Step 29: 24304 + 868 = 25172
Step 30: 25172 + 868 = 26040
Step 31: 26040 + 868 = 26908
Step 32: 26908 + 868 = 27776
Step 33: 27776 + 868 = 28644
Step 34: 28644 + 868 = 29512
Step 35: 29512 + 868 = 30380
Step 36: 30380 + 868 = 31248
Step 37: 31248 + 868 = 32116
Step 38: 32116 + 868 = 32984
Step 39: 32984 + 868 = 33852
Step 40: 33852 + 868 = 34720

So, 868*40 = 34720