We look at the division of 15511057 by 911 
The aim is to understand the frequency of 911 in 15511057.

On to step 1:
The number 911 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 911

Let's proceed to step 2:
911 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 911

Let's proceed to step 3:
If we divide 155 by 911, we get 0 and a remainder of 155.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 155 to get 155.
Bring next digit (1) of the dividend behind the 155 and repeat the process: 1551 / 911

Going ahead to step 4:
911 can be fit into 1551 1 times, resulting in a remainder of 640.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 911 from 1551, we get 640.
Bring next digit (1) of the dividend behind the 640 and repeat the process: 6401 / 911

Let's proceed to step 5:
6401 divided by 911 is 7 with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 6377 from 6401, we get 24.
Grab the next digit (0) from the dividend, add it to 24, then carry on: 240 / 911

Advancing to step 6:
When dividing 240 by 911, we get 0 with a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 170.0
If we subtract 0 from 240, we get 240.
Append the next digit (5) from the dividend to 240 and continue with: 2405 / 911

Advancing to step 7:
When dividing 2405 by 911, we get 2 with a remainder of 583.
Record the quotient 2 as the next digit in the result. 
Result so far: 1702.0
Subtract 1822 from 2405 to get 583.
Take the next digit (7) from the dividend and append it to 583, then repeat: 5837 / 911

On to step 8:
If we divide 5837 by 911, we get 6 and a remainder of 371.
Put 6 as the next digit of the answer. 
Result so far: 17026.0
Deduct 5466 from 5837 and we're left with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Step 9:
911 goes into 3710 4 times with a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 17026.4
The remainder is 66 after subtracting 3644 from 3710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 10:
If we divide 660 by 911, we get 0 and a remainder of 660.
The number 0 becomes the next digit in our result. 
Result so far: 17026.4
The remainder is 660 after subtracting 0 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Moving on to step 11:
The number 911 fits into 6600 7 times, leaving a remainder of 223.
Record the quotient 7 as the next digit in the result. 
Result so far: 17026.407
Deduct 6377 from 6600 and we're left with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Going ahead to step 12:
2230 divided by 911 is 2 with a remainder of 408.
Write down 2 as next digit of the result. 
Result so far: 17026.4072
Subtract 1822 from 2230 to get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Going ahead to step 13:
When dividing 4080 by 911, we get 4 with a remainder of 436.
Use 4 as the next digit of our solution. 
Result so far: 17026.40724
Subtracting 3644 from 4080 leaves us with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Advancing to step 14:
911 can be fit into 4360 4 times, resulting in a remainder of 716.
The next digit of our result is 4. 
Result so far: 17026.407244
The remainder is 716 after subtracting 3644 from 4360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7160, and continue the process.

In conclusion, the division gives 17026.407244 with a balance of 7.16e-05.