Let's roll up our sleeves and solve this. We have 181 and we're going to multiply it by 36, essentially adding 181 to itself 36 times.
Step 1: 0 + 181 = 181
Step 2: 181 + 181 = 362
Step 3: 362 + 181 = 543
Step 4: 543 + 181 = 724
Step 5: 724 + 181 = 905
Step 6: 905 + 181 = 1086
Step 7: 1086 + 181 = 1267
Step 8: 1267 + 181 = 1448
Step 9: 1448 + 181 = 1629
Step 10: 1629 + 181 = 1810
Step 11: 1810 + 181 = 1991
Step 12: 1991 + 181 = 2172
Step 13: 2172 + 181 = 2353
Step 14: 2353 + 181 = 2534
Step 15: 2534 + 181 = 2715
Step 16: 2715 + 181 = 2896
Step 17: 2896 + 181 = 3077
Step 18: 3077 + 181 = 3258
Step 19: 3258 + 181 = 3439
Step 20: 3439 + 181 = 3620
Step 21: 3620 + 181 = 3801
Step 22: 3801 + 181 = 3982
Step 23: 3982 + 181 = 4163
Step 24: 4163 + 181 = 4344
Step 25: 4344 + 181 = 4525
Step 26: 4525 + 181 = 4706
Step 27: 4706 + 181 = 4887
Step 28: 4887 + 181 = 5068
Step 29: 5068 + 181 = 5249
Step 30: 5249 + 181 = 5430
Step 31: 5430 + 181 = 5611
Step 32: 5611 + 181 = 5792
Step 33: 5792 + 181 = 5973
Step 34: 5973 + 181 = 6154
Step 35: 6154 + 181 = 6335
Step 36: 6335 + 181 = 6516

So, 181*36 = 6516