Without delay, let's solve this. We've got 844 and we will be multiplying it by 10, that is, adding 844 to itself 10 times.
Step 1: 0 + 844 = 844
Step 2: 844 + 844 = 1688
Step 3: 1688 + 844 = 2532
Step 4: 2532 + 844 = 3376
Step 5: 3376 + 844 = 4220
Step 6: 4220 + 844 = 5064
Step 7: 5064 + 844 = 5908
Step 8: 5908 + 844 = 6752
Step 9: 6752 + 844 = 7596
Step 10: 7596 + 844 = 8440

So, 844*10 = 8440