Without delay, let's solve this. We've got 68 and we will be multiplying it by 5, that is, adding 68 to itself 5 times.
Step 1: 0 + 68 = 68
Step 2: 68 + 68 = 136
Step 3: 136 + 68 = 204
Step 4: 204 + 68 = 272
Step 5: 272 + 68 = 340

So, 68*5 = 340