Alright, let's solve this math problem step by step. First, we have the number 782. 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 782 and add it to itself 5 times.
Step 1: 0 + 782 = 782
Step 2: 782 + 782 = 1564
Step 3: 1564 + 782 = 2346
Step 4: 2346 + 782 = 3128
Step 5: 3128 + 782 = 3910

So, 782*5 = 3910