Alright, let's solve this math problem step by step. First, we have the number 450. 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 450 and add it to itself 5 times.
Step 1: 0 + 450 = 450
Step 2: 450 + 450 = 900
Step 3: 900 + 450 = 1350
Step 4: 1350 + 450 = 1800
Step 5: 1800 + 450 = 2250

So, 450*5 = 2250