Sure thing, let's get straight to it. We start with 109 and we're going to multiply it by 10, which means adding 109 to itself 10 times.
Step 1: 0 + 109 = 109
Step 2: 109 + 109 = 218
Step 3: 218 + 109 = 327
Step 4: 327 + 109 = 436
Step 5: 436 + 109 = 545
Step 6: 545 + 109 = 654
Step 7: 654 + 109 = 763
Step 8: 763 + 109 = 872
Step 9: 872 + 109 = 981
Step 10: 981 + 109 = 1090

So, 109*10 = 1090