We look at the division of 71855721 by 911 
The aim is to understand the frequency of 911 in 71855721.

Advancing to step 1:
If we divide 7 by 911, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 911

Going ahead to step 2:
If we divide 71 by 911, we get 0 and a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Grab the next digit (8) from the dividend, add it to 71, then carry on: 718 / 911

Let's proceed to step 3:
718 divided by 911 is 0 with a remainder of 718.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 718, we end up with 718.
Bring next digit (5) of the dividend behind the 718 and repeat the process: 7185 / 911

Let's proceed to step 4:
When dividing 7185 by 911, we get 7 with a remainder of 808.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 6377 from 7185, we get 808.
Take the next digit (5) from the dividend and append it to 808, then repeat: 8085 / 911

On to step 5:
911 goes into 8085 8 times with a remainder of 797.
Put 8 as the next digit of the answer. 
Result so far: 78.0
If we take 7288 away from 8085, we end up with 797.
Append the next digit (7) from the dividend to 797 and continue with: 7977 / 911

Going ahead to step 6:
The number 911 fits into 7977 8 times, leaving a remainder of 689.
Write down 8 as next digit of the result. 
Result so far: 788.0
If we subtract 7288 from 7977, we get 689.
Fetch the next digit (2) from the dividend, attach it to 689 and continue: 6892 / 911

Advancing to step 7:
The number 911 fits into 6892 7 times, leaving a remainder of 515.
Use 7 as the next digit of our solution. 
Result so far: 7887.0
Subtracting 6377 from 6892 leaves us with 515.
Include the next digit (1) from the dividend after 515, then repeat: 5151 / 911

Moving on to step 8:
911 goes into 5151 5 times with a remainder of 596.
Record the quotient 5 as the next digit in the result. 
Result so far: 78875.0
Subtract 4555 from 5151 to get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Advancing to step 9:
911 can be fit into 5960 6 times, resulting in a remainder of 494.
The number 6 becomes the next digit in our result. 
Result so far: 78875.6
Subtract 5466 from 5960 to get 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

On to step 10:
4940 divided by 911 is 5 with a remainder of 385.
Put 5 as the next digit of the answer. 
Result so far: 78875.65
Deduct 4555 from 4940 and we're left with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Advancing to step 11:
When dividing 3850 by 911, we get 4 with a remainder of 206.
Use 4 as the next digit of our solution. 
Result so far: 78875.654
Subtract 3644 from 3850 to get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 12:
2060 divided by 911 is 2 with a remainder of 238.
The next digit of our result is 2. 
Result so far: 78875.6542
Subtract 1822 from 2060 to get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Advancing to step 13:
911 goes into 2380 2 times with a remainder of 558.
Record the quotient 2 as the next digit in the result. 
Result so far: 78875.65422
Subtract 1822 from 2380 to get 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

The quotient of the division is 78875.65422, and the remainder is 0.000558.