Alright, let's solve this math problem step by step. First, we have the number 278. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 10. So, we're going to take the number 278 and add it to itself 10 times.
Step 1: 0 + 278 = 278
Step 2: 278 + 278 = 556
Step 3: 556 + 278 = 834
Step 4: 834 + 278 = 1112
Step 5: 1112 + 278 = 1390
Step 6: 1390 + 278 = 1668
Step 7: 1668 + 278 = 1946
Step 8: 1946 + 278 = 2224
Step 9: 2224 + 278 = 2502
Step 10: 2502 + 278 = 2780

So, 278*10 = 2780