Alright, let's solve this math problem step by step. First, we have the number 99. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 17. So, we're going to take the number 99 and add it to itself 17 times.
Step 1: 0 + 99 = 99
Step 2: 99 + 99 = 198
Step 3: 198 + 99 = 297
Step 4: 297 + 99 = 396
Step 5: 396 + 99 = 495
Step 6: 495 + 99 = 594
Step 7: 594 + 99 = 693
Step 8: 693 + 99 = 792
Step 9: 792 + 99 = 891
Step 10: 891 + 99 = 990
Step 11: 990 + 99 = 1089
Step 12: 1089 + 99 = 1188
Step 13: 1188 + 99 = 1287
Step 14: 1287 + 99 = 1386
Step 15: 1386 + 99 = 1485
Step 16: 1485 + 99 = 1584
Step 17: 1584 + 99 = 1683

So, 99*17 = 1683