Alright, let's solve this math problem step by step. First, we have the number 600. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 75. So, we're going to take the number 600 and add it to itself 75 times.
Step 1: 0 + 600 = 600
Step 2: 600 + 600 = 1200
Step 3: 1200 + 600 = 1800
Step 4: 1800 + 600 = 2400
Step 5: 2400 + 600 = 3000
Step 6: 3000 + 600 = 3600
Step 7: 3600 + 600 = 4200
Step 8: 4200 + 600 = 4800
Step 9: 4800 + 600 = 5400
Step 10: 5400 + 600 = 6000
Step 11: 6000 + 600 = 6600
Step 12: 6600 + 600 = 7200
Step 13: 7200 + 600 = 7800
Step 14: 7800 + 600 = 8400
Step 15: 8400 + 600 = 9000
Step 16: 9000 + 600 = 9600
Step 17: 9600 + 600 = 10200
Step 18: 10200 + 600 = 10800
Step 19: 10800 + 600 = 11400
Step 20: 11400 + 600 = 12000
Step 21: 12000 + 600 = 12600
Step 22: 12600 + 600 = 13200
Step 23: 13200 + 600 = 13800
Step 24: 13800 + 600 = 14400
Step 25: 14400 + 600 = 15000
Step 26: 15000 + 600 = 15600
Step 27: 15600 + 600 = 16200
Step 28: 16200 + 600 = 16800
Step 29: 16800 + 600 = 17400
Step 30: 17400 + 600 = 18000
Step 31: 18000 + 600 = 18600
Step 32: 18600 + 600 = 19200
Step 33: 19200 + 600 = 19800
Step 34: 19800 + 600 = 20400
Step 35: 20400 + 600 = 21000
Step 36: 21000 + 600 = 21600
Step 37: 21600 + 600 = 22200
Step 38: 22200 + 600 = 22800
Step 39: 22800 + 600 = 23400
Step 40: 23400 + 600 = 24000
Step 41: 24000 + 600 = 24600
Step 42: 24600 + 600 = 25200
Step 43: 25200 + 600 = 25800
Step 44: 25800 + 600 = 26400
Step 45: 26400 + 600 = 27000
Step 46: 27000 + 600 = 27600
Step 47: 27600 + 600 = 28200
Step 48: 28200 + 600 = 28800
Step 49: 28800 + 600 = 29400
Step 50: 29400 + 600 = 30000
Step 51: 30000 + 600 = 30600
Step 52: 30600 + 600 = 31200
Step 53: 31200 + 600 = 31800
Step 54: 31800 + 600 = 32400
Step 55: 32400 + 600 = 33000
Step 56: 33000 + 600 = 33600
Step 57: 33600 + 600 = 34200
Step 58: 34200 + 600 = 34800
Step 59: 34800 + 600 = 35400
Step 60: 35400 + 600 = 36000
Step 61: 36000 + 600 = 36600
Step 62: 36600 + 600 = 37200
Step 63: 37200 + 600 = 37800
Step 64: 37800 + 600 = 38400
Step 65: 38400 + 600 = 39000
Step 66: 39000 + 600 = 39600
Step 67: 39600 + 600 = 40200
Step 68: 40200 + 600 = 40800
Step 69: 40800 + 600 = 41400
Step 70: 41400 + 600 = 42000
Step 71: 42000 + 600 = 42600
Step 72: 42600 + 600 = 43200
Step 73: 43200 + 600 = 43800
Step 74: 43800 + 600 = 44400
Step 75: 44400 + 600 = 45000

So, 600*75 = 45000