OK, let's crack this. We're given 939 and our task is to multiply it by 6. Essentially, we'll be adding 939 to itself 6 times.
Step 1: 0 + 939 = 939
Step 2: 939 + 939 = 1878
Step 3: 1878 + 939 = 2817
Step 4: 2817 + 939 = 3756
Step 5: 3756 + 939 = 4695
Step 6: 4695 + 939 = 5634

So, 939*6 = 5634