Alright, let's solve this math problem step by step. First, we have the number 137. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 23. So, we're going to take the number 137 and add it to itself 23 times.
Step 1: 0 + 137 = 137
Step 2: 137 + 137 = 274
Step 3: 274 + 137 = 411
Step 4: 411 + 137 = 548
Step 5: 548 + 137 = 685
Step 6: 685 + 137 = 822
Step 7: 822 + 137 = 959
Step 8: 959 + 137 = 1096
Step 9: 1096 + 137 = 1233
Step 10: 1233 + 137 = 1370
Step 11: 1370 + 137 = 1507
Step 12: 1507 + 137 = 1644
Step 13: 1644 + 137 = 1781
Step 14: 1781 + 137 = 1918
Step 15: 1918 + 137 = 2055
Step 16: 2055 + 137 = 2192
Step 17: 2192 + 137 = 2329
Step 18: 2329 + 137 = 2466
Step 19: 2466 + 137 = 2603
Step 20: 2603 + 137 = 2740
Step 21: 2740 + 137 = 2877
Step 22: 2877 + 137 = 3014
Step 23: 3014 + 137 = 3151

So, 137*23 = 3151