Sure thing! We've got 839 and we're gonna multiply it by 8. That's the same as adding 839 to itself 8 times.
Step 1: 0 + 839 = 839
Step 2: 839 + 839 = 1678
Step 3: 1678 + 839 = 2517
Step 4: 2517 + 839 = 3356
Step 5: 3356 + 839 = 4195
Step 6: 4195 + 839 = 5034
Step 7: 5034 + 839 = 5873
Step 8: 5873 + 839 = 6712

So, 839*8 = 6712