Alright, let's solve this math problem step by step. First, we have the number 765. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 5. So, we're going to take the number 765 and add it to itself 5 times.
Step 1: 0 + 765 = 765
Step 2: 765 + 765 = 1530
Step 3: 1530 + 765 = 2295
Step 4: 2295 + 765 = 3060
Step 5: 3060 + 765 = 3825

So, 765*5 = 3825