OK, let's work through this together. We're starting with 375 and we're going to multiply it by 17, which means we add 375 to itself 17 times.
Step 1: 0 + 375 = 375
Step 2: 375 + 375 = 750
Step 3: 750 + 375 = 1125
Step 4: 1125 + 375 = 1500
Step 5: 1500 + 375 = 1875
Step 6: 1875 + 375 = 2250
Step 7: 2250 + 375 = 2625
Step 8: 2625 + 375 = 3000
Step 9: 3000 + 375 = 3375
Step 10: 3375 + 375 = 3750
Step 11: 3750 + 375 = 4125
Step 12: 4125 + 375 = 4500
Step 13: 4500 + 375 = 4875
Step 14: 4875 + 375 = 5250
Step 15: 5250 + 375 = 5625
Step 16: 5625 + 375 = 6000
Step 17: 6000 + 375 = 6375

So, 375*17 = 6375