OK, let's crack this. We're given 191 and our task is to multiply it by 40. Essentially, we'll be adding 191 to itself 40 times.
Step 1: 0 + 191 = 191
Step 2: 191 + 191 = 382
Step 3: 382 + 191 = 573
Step 4: 573 + 191 = 764
Step 5: 764 + 191 = 955
Step 6: 955 + 191 = 1146
Step 7: 1146 + 191 = 1337
Step 8: 1337 + 191 = 1528
Step 9: 1528 + 191 = 1719
Step 10: 1719 + 191 = 1910
Step 11: 1910 + 191 = 2101
Step 12: 2101 + 191 = 2292
Step 13: 2292 + 191 = 2483
Step 14: 2483 + 191 = 2674
Step 15: 2674 + 191 = 2865
Step 16: 2865 + 191 = 3056
Step 17: 3056 + 191 = 3247
Step 18: 3247 + 191 = 3438
Step 19: 3438 + 191 = 3629
Step 20: 3629 + 191 = 3820
Step 21: 3820 + 191 = 4011
Step 22: 4011 + 191 = 4202
Step 23: 4202 + 191 = 4393
Step 24: 4393 + 191 = 4584
Step 25: 4584 + 191 = 4775
Step 26: 4775 + 191 = 4966
Step 27: 4966 + 191 = 5157
Step 28: 5157 + 191 = 5348
Step 29: 5348 + 191 = 5539
Step 30: 5539 + 191 = 5730
Step 31: 5730 + 191 = 5921
Step 32: 5921 + 191 = 6112
Step 33: 6112 + 191 = 6303
Step 34: 6303 + 191 = 6494
Step 35: 6494 + 191 = 6685
Step 36: 6685 + 191 = 6876
Step 37: 6876 + 191 = 7067
Step 38: 7067 + 191 = 7258
Step 39: 7258 + 191 = 7449
Step 40: 7449 + 191 = 7640

So, 191*40 = 7640