OK, let's work through this together. We're starting with 531 and we're going to multiply it by 6, which means we add 531 to itself 6 times.
Step 1: 0 + 531 = 531
Step 2: 531 + 531 = 1062
Step 3: 1062 + 531 = 1593
Step 4: 1593 + 531 = 2124
Step 5: 2124 + 531 = 2655
Step 6: 2655 + 531 = 3186

So, 531*6 = 3186