OK, let's work through this together. We're starting with 505 and we're going to multiply it by 6, which means we add 505 to itself 6 times.
Step 1: 0 + 505 = 505
Step 2: 505 + 505 = 1010
Step 3: 1010 + 505 = 1515
Step 4: 1515 + 505 = 2020
Step 5: 2020 + 505 = 2525
Step 6: 2525 + 505 = 3030

So, 505*6 = 3030