Let's roll up our sleeves and solve this. We have 115 and we're going to multiply it by 17, essentially adding 115 to itself 17 times.
Step 1: 0 + 115 = 115
Step 2: 115 + 115 = 230
Step 3: 230 + 115 = 345
Step 4: 345 + 115 = 460
Step 5: 460 + 115 = 575
Step 6: 575 + 115 = 690
Step 7: 690 + 115 = 805
Step 8: 805 + 115 = 920
Step 9: 920 + 115 = 1035
Step 10: 1035 + 115 = 1150
Step 11: 1150 + 115 = 1265
Step 12: 1265 + 115 = 1380
Step 13: 1380 + 115 = 1495
Step 14: 1495 + 115 = 1610
Step 15: 1610 + 115 = 1725
Step 16: 1725 + 115 = 1840
Step 17: 1840 + 115 = 1955

So, 115*17 = 1955