Alright, let's solve this math problem step by step. First, we have the number 309. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 48. So, we're going to take the number 309 and add it to itself 48 times.
Step 1: 0 + 309 = 309
Step 2: 309 + 309 = 618
Step 3: 618 + 309 = 927
Step 4: 927 + 309 = 1236
Step 5: 1236 + 309 = 1545
Step 6: 1545 + 309 = 1854
Step 7: 1854 + 309 = 2163
Step 8: 2163 + 309 = 2472
Step 9: 2472 + 309 = 2781
Step 10: 2781 + 309 = 3090
Step 11: 3090 + 309 = 3399
Step 12: 3399 + 309 = 3708
Step 13: 3708 + 309 = 4017
Step 14: 4017 + 309 = 4326
Step 15: 4326 + 309 = 4635
Step 16: 4635 + 309 = 4944
Step 17: 4944 + 309 = 5253
Step 18: 5253 + 309 = 5562
Step 19: 5562 + 309 = 5871
Step 20: 5871 + 309 = 6180
Step 21: 6180 + 309 = 6489
Step 22: 6489 + 309 = 6798
Step 23: 6798 + 309 = 7107
Step 24: 7107 + 309 = 7416
Step 25: 7416 + 309 = 7725
Step 26: 7725 + 309 = 8034
Step 27: 8034 + 309 = 8343
Step 28: 8343 + 309 = 8652
Step 29: 8652 + 309 = 8961
Step 30: 8961 + 309 = 9270
Step 31: 9270 + 309 = 9579
Step 32: 9579 + 309 = 9888
Step 33: 9888 + 309 = 10197
Step 34: 10197 + 309 = 10506
Step 35: 10506 + 309 = 10815
Step 36: 10815 + 309 = 11124
Step 37: 11124 + 309 = 11433
Step 38: 11433 + 309 = 11742
Step 39: 11742 + 309 = 12051
Step 40: 12051 + 309 = 12360
Step 41: 12360 + 309 = 12669
Step 42: 12669 + 309 = 12978
Step 43: 12978 + 309 = 13287
Step 44: 13287 + 309 = 13596
Step 45: 13596 + 309 = 13905
Step 46: 13905 + 309 = 14214
Step 47: 14214 + 309 = 14523
Step 48: 14523 + 309 = 14832

So, 309*48 = 14832