OK, let's crack this. We're given 248 and our task is to multiply it by 11. Essentially, we'll be adding 248 to itself 11 times.
Step 1: 0 + 248 = 248
Step 2: 248 + 248 = 496
Step 3: 496 + 248 = 744
Step 4: 744 + 248 = 992
Step 5: 992 + 248 = 1240
Step 6: 1240 + 248 = 1488
Step 7: 1488 + 248 = 1736
Step 8: 1736 + 248 = 1984
Step 9: 1984 + 248 = 2232
Step 10: 2232 + 248 = 2480
Step 11: 2480 + 248 = 2728

So, 248*11 = 2728