We're dividing 91739118 by 571 
The aim is to understand the frequency of 571 in 91739118.

Advancing to step 1:
When dividing 9 by 571, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 571

Advancing to step 2:
571 goes into 91 0 times with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Bring next digit (7) of the dividend behind the 91 and repeat the process: 917 / 571

Let's proceed to step 3:
571 goes into 917 1 times with a remainder of 346.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 571 from 917 leaves us with 346.
Take the next digit (3) from the dividend and append it to 346, then repeat: 3463 / 571

Advancing to step 4:
If we divide 3463 by 571, we get 6 and a remainder of 37.
The next digit of our result is 6. 
Result so far: 16.0
Subtracting 3426 from 3463 leaves us with 37.
Grab the next digit (9) from the dividend, add it to 37, then carry on: 379 / 571

Going ahead to step 5:
379 divided by 571 is 0 with a remainder of 379.
Write down 0 as next digit of the result. 
Result so far: 160.0
If we take 0 away from 379, we end up with 379.
Bring next digit (1) of the dividend behind the 379 and repeat the process: 3791 / 571

Going ahead to step 6:
The number 571 fits into 3791 6 times, leaving a remainder of 365.
The number 6 becomes the next digit in our result. 
Result so far: 1606.0
If we take 3426 away from 3791, we end up with 365.
Take the next digit (1) from the dividend and append it to 365, then repeat: 3651 / 571

Moving on to step 7:
If we divide 3651 by 571, we get 6 and a remainder of 225.
The next digit of our result is 6. 
Result so far: 16066.0
Deduct 3426 from 3651 and we're left with 225.
Fetch the next digit (8) from the dividend, attach it to 225 and continue: 2258 / 571

Moving on to step 8:
571 goes into 2258 3 times with a remainder of 545.
Put 3 as the next digit of the answer. 
Result so far: 160663.0
Subtracting 1713 from 2258 leaves us with 545.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5450, and continue the process.

Moving on to step 9:
The number 571 fits into 5450 9 times, leaving a remainder of 311.
Put 9 as the next digit of the answer. 
Result so far: 160663.9
The remainder is 311 after subtracting 5139 from 5450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Advancing to step 10:
571 can be fit into 3110 5 times, resulting in a remainder of 255.
The number 5 becomes the next digit in our result. 
Result so far: 160663.95
Subtract 2855 from 3110 to get 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Moving on to step 11:
2550 divided by 571 is 4 with a remainder of 266.
Record the quotient 4 as the next digit in the result. 
Result so far: 160663.954
Deduct 2284 from 2550 and we're left with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Moving on to step 12:
571 goes into 2660 4 times with a remainder of 376.
Put 4 as the next digit of the answer. 
Result so far: 160663.9544
If we subtract 2284 from 2660, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

The final result is 160663.9544 with a remainder of 0.00376.