OK, let's work through this together. We're starting with 85 and we're going to multiply it by 7, which means we add 85 to itself 7 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
Step 7: 510 + 85 = 595

So, 85*7 = 595