Alright, let's solve this math problem step by step. First, we have the number 319. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 42. So, we're going to take the number 319 and add it to itself 42 times.
Step 1: 0 + 319 = 319
Step 2: 319 + 319 = 638
Step 3: 638 + 319 = 957
Step 4: 957 + 319 = 1276
Step 5: 1276 + 319 = 1595
Step 6: 1595 + 319 = 1914
Step 7: 1914 + 319 = 2233
Step 8: 2233 + 319 = 2552
Step 9: 2552 + 319 = 2871
Step 10: 2871 + 319 = 3190
Step 11: 3190 + 319 = 3509
Step 12: 3509 + 319 = 3828
Step 13: 3828 + 319 = 4147
Step 14: 4147 + 319 = 4466
Step 15: 4466 + 319 = 4785
Step 16: 4785 + 319 = 5104
Step 17: 5104 + 319 = 5423
Step 18: 5423 + 319 = 5742
Step 19: 5742 + 319 = 6061
Step 20: 6061 + 319 = 6380
Step 21: 6380 + 319 = 6699
Step 22: 6699 + 319 = 7018
Step 23: 7018 + 319 = 7337
Step 24: 7337 + 319 = 7656
Step 25: 7656 + 319 = 7975
Step 26: 7975 + 319 = 8294
Step 27: 8294 + 319 = 8613
Step 28: 8613 + 319 = 8932
Step 29: 8932 + 319 = 9251
Step 30: 9251 + 319 = 9570
Step 31: 9570 + 319 = 9889
Step 32: 9889 + 319 = 10208
Step 33: 10208 + 319 = 10527
Step 34: 10527 + 319 = 10846
Step 35: 10846 + 319 = 11165
Step 36: 11165 + 319 = 11484
Step 37: 11484 + 319 = 11803
Step 38: 11803 + 319 = 12122
Step 39: 12122 + 319 = 12441
Step 40: 12441 + 319 = 12760
Step 41: 12760 + 319 = 13079
Step 42: 13079 + 319 = 13398

So, 319*42 = 13398