Sure thing! We've got 86 and we're gonna multiply it by 7. That's the same as adding 86 to itself 7 times.
Step 1: 0 + 86 = 86
Step 2: 86 + 86 = 172
Step 3: 172 + 86 = 258
Step 4: 258 + 86 = 344
Step 5: 344 + 86 = 430
Step 6: 430 + 86 = 516
Step 7: 516 + 86 = 602

So, 86*7 = 602