Without delay, let's solve this. We've got 85 and we will be multiplying it by 6, that is, adding 85 to itself 6 times.
Step 1: 0 + 85 = 85
Step 2: 85 + 85 = 170
Step 3: 170 + 85 = 255
Step 4: 255 + 85 = 340
Step 5: 340 + 85 = 425
Step 6: 425 + 85 = 510

So, 85*6 = 510