Alright, let's solve this math problem step by step. First, we have the number 150. 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 150 and add it to itself 23 times.
Step 1: 0 + 150 = 150
Step 2: 150 + 150 = 300
Step 3: 300 + 150 = 450
Step 4: 450 + 150 = 600
Step 5: 600 + 150 = 750
Step 6: 750 + 150 = 900
Step 7: 900 + 150 = 1050
Step 8: 1050 + 150 = 1200
Step 9: 1200 + 150 = 1350
Step 10: 1350 + 150 = 1500
Step 11: 1500 + 150 = 1650
Step 12: 1650 + 150 = 1800
Step 13: 1800 + 150 = 1950
Step 14: 1950 + 150 = 2100
Step 15: 2100 + 150 = 2250
Step 16: 2250 + 150 = 2400
Step 17: 2400 + 150 = 2550
Step 18: 2550 + 150 = 2700
Step 19: 2700 + 150 = 2850
Step 20: 2850 + 150 = 3000
Step 21: 3000 + 150 = 3150
Step 22: 3150 + 150 = 3300
Step 23: 3300 + 150 = 3450

So, 150*23 = 3450