OK, let's work through this together. We're starting with 113 and we're going to multiply it by 8, which means we add 113 to itself 8 times.
Step 1: 0 + 113 = 113
Step 2: 113 + 113 = 226
Step 3: 226 + 113 = 339
Step 4: 339 + 113 = 452
Step 5: 452 + 113 = 565
Step 6: 565 + 113 = 678
Step 7: 678 + 113 = 791
Step 8: 791 + 113 = 904

So, 113*8 = 904