We look at the division of 11899778 by 571 
The aim is to understand the frequency of 571 in 11899778.

Advancing to step 1:
571 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 571

Going ahead to step 2:
The number 571 fits into 11 0 times, leaving a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 11 to get 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 571

Step 3:
571 goes into 118 0 times with a remainder of 118.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 118, we get 118.
Take the next digit (9) from the dividend and append it to 118, then repeat: 1189 / 571

Step 4:
The number 571 fits into 1189 2 times, leaving a remainder of 47.
The next digit of our result is 2. 
Result so far: 2.0
If we take 1142 away from 1189, we end up with 47.
Grab the next digit (9) from the dividend, add it to 47, then carry on: 479 / 571

On to step 5:
The number 571 fits into 479 0 times, leaving a remainder of 479.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we subtract 0 from 479, we get 479.
Append the next digit (7) from the dividend to 479 and continue with: 4797 / 571

Advancing to step 6:
The number 571 fits into 4797 8 times, leaving a remainder of 229.
Put 8 as the next digit of the answer. 
Result so far: 208.0
Subtract 4568 from 4797 to get 229.
Bring next digit (7) of the dividend behind the 229 and repeat the process: 2297 / 571

Going ahead to step 7:
2297 divided by 571 is 4 with a remainder of 13.
Record the quotient 4 as the next digit in the result. 
Result so far: 2084.0
Deduct 2284 from 2297 and we're left with 13.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 571

Going ahead to step 8:
571 goes into 138 0 times with a remainder of 138.
Record the quotient 0 as the next digit in the result. 
Result so far: 20840.0
If we subtract 0 from 138, we get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Advancing to step 9:
571 can be fit into 1380 2 times, resulting in a remainder of 238.
Put 2 as the next digit of the answer. 
Result so far: 20840.2
If we subtract 1142 from 1380, we 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.

On to step 10:
When dividing 2380 by 571, we get 4 with a remainder of 96.
Use 4 as the next digit of our solution. 
Result so far: 20840.24
If we subtract 2284 from 2380, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 11:
When dividing 960 by 571, we get 1 with a remainder of 389.
The number 1 becomes the next digit in our result. 
Result so far: 20840.241
The remainder is 389 after subtracting 571 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

On to step 12:
The number 571 fits into 3890 6 times, leaving a remainder of 464.
Write down 6 as next digit of the result. 
Result so far: 20840.2416
Subtracting 3426 from 3890 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Let's proceed to step 13:
4640 divided by 571 is 8 with a remainder of 72.
The next digit of our result is 8. 
Result so far: 20840.24168
If we subtract 4568 from 4640, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 14:
When dividing 720 by 571, we get 1 with a remainder of 149.
Record the quotient 1 as the next digit in the result. 
Result so far: 20840.241681
Deduct 571 from 720 and we're left with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

Moving on to step 15:
When dividing 1490 by 571, we get 2 with a remainder of 348.
Use 2 as the next digit of our solution. 
Result so far: 20840.2416812
If we take 1142 away from 1490, we end up with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Moving on to step 16:
The number 571 fits into 3480 6 times, leaving a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 20840.24168126
If we subtract 3426 from 3480, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 20840.24168126, with a leftover of 5.4e-08.