Alright, let's solve this math problem step by step. First, we have the number 203. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 18. So, we're going to take the number 203 and add it to itself 18 times.
Step 1: 0 + 203 = 203
Step 2: 203 + 203 = 406
Step 3: 406 + 203 = 609
Step 4: 609 + 203 = 812
Step 5: 812 + 203 = 1015
Step 6: 1015 + 203 = 1218
Step 7: 1218 + 203 = 1421
Step 8: 1421 + 203 = 1624
Step 9: 1624 + 203 = 1827
Step 10: 1827 + 203 = 2030
Step 11: 2030 + 203 = 2233
Step 12: 2233 + 203 = 2436
Step 13: 2436 + 203 = 2639
Step 14: 2639 + 203 = 2842
Step 15: 2842 + 203 = 3045
Step 16: 3045 + 203 = 3248
Step 17: 3248 + 203 = 3451
Step 18: 3451 + 203 = 3654

So, 203*18 = 3654