Let's roll up our sleeves and solve this. We have 917 and we're going to multiply it by 27, essentially adding 917 to itself 27 times.
Step 1: 0 + 917 = 917
Step 2: 917 + 917 = 1834
Step 3: 1834 + 917 = 2751
Step 4: 2751 + 917 = 3668
Step 5: 3668 + 917 = 4585
Step 6: 4585 + 917 = 5502
Step 7: 5502 + 917 = 6419
Step 8: 6419 + 917 = 7336
Step 9: 7336 + 917 = 8253
Step 10: 8253 + 917 = 9170
Step 11: 9170 + 917 = 10087
Step 12: 10087 + 917 = 11004
Step 13: 11004 + 917 = 11921
Step 14: 11921 + 917 = 12838
Step 15: 12838 + 917 = 13755
Step 16: 13755 + 917 = 14672
Step 17: 14672 + 917 = 15589
Step 18: 15589 + 917 = 16506
Step 19: 16506 + 917 = 17423
Step 20: 17423 + 917 = 18340
Step 21: 18340 + 917 = 19257
Step 22: 19257 + 917 = 20174
Step 23: 20174 + 917 = 21091
Step 24: 21091 + 917 = 22008
Step 25: 22008 + 917 = 22925
Step 26: 22925 + 917 = 23842
Step 27: 23842 + 917 = 24759

So, 917*27 = 24759