Let's roll up our sleeves and solve this. We have 67 and we're going to multiply it by 10, essentially adding 67 to itself 10 times.
Step 1: 0 + 67 = 67
Step 2: 67 + 67 = 134
Step 3: 134 + 67 = 201
Step 4: 201 + 67 = 268
Step 5: 268 + 67 = 335
Step 6: 335 + 67 = 402
Step 7: 402 + 67 = 469
Step 8: 469 + 67 = 536
Step 9: 536 + 67 = 603
Step 10: 603 + 67 = 670

So, 67*10 = 670