Without delay, let's solve this. We've got 764 and we will be multiplying it by 5, that is, adding 764 to itself 5 times.
Step 1: 0 + 764 = 764
Step 2: 764 + 764 = 1528
Step 3: 1528 + 764 = 2292
Step 4: 2292 + 764 = 3056
Step 5: 3056 + 764 = 3820

So, 764*5 = 3820