Let's divide 571609 by 86
The aim is to understand the frequency of 86 in 571609.

Advancing to step 1:
If we divide 5 by 86, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 86

Step 2:
When dividing 57 by 86, we get 0 with a remainder of 57.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 57, we get 57.
Grab the next digit (1) from the dividend, add it to 57, then carry on: 571 / 86

Let's proceed to step 3:
The number 86 fits into 571 6 times, leaving a remainder of 55.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 516 away from 571, we end up with 55.
Take the next digit (6) from the dividend and append it to 55, then repeat: 556 / 86

Advancing to step 4:
556 divided by 86 is 6 with a remainder of 40.
Put 6 as the next digit of the answer. 
Result so far: 66.0
The remainder is 40 after subtracting 516 from 556.
Append the next digit (0) from the dividend to 40 and continue with: 400 / 86

Going ahead to step 5:
400 divided by 86 is 4 with a remainder of 56.
The next digit of our result is 4. 
Result so far: 664.0
Subtracting 344 from 400 leaves us with 56.
Append the next digit (9) from the dividend to 56 and continue with: 569 / 86

Advancing to step 6:
86 can be fit into 569 6 times, resulting in a remainder of 53.
The next digit of our result is 6. 
Result so far: 6646.0
The remainder is 53 after subtracting 516 from 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
530 divided by 86 is 6 with a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 6646.6
Subtract 516 from 530 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 8:
The number 86 fits into 140 1 times, leaving a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 6646.61
If we take 86 away from 140, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 9:
86 can be fit into 540 6 times, resulting in a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 6646.616
Deduct 516 from 540 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
240 divided by 86 is 2 with a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 6646.6162
If we take 172 away from 240, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
The number 86 fits into 680 7 times, leaving a remainder of 78.
The number 7 becomes the next digit in our result. 
Result so far: 6646.61627
Subtract 602 from 680 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 12:
780 divided by 86 is 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 6646.616279
Deduct 774 from 780 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 13:
86 goes into 60 0 times with a remainder of 60.
The next digit of our result is 0. 
Result so far: 6646.616279
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 14:
The number 86 fits into 600 6 times, leaving a remainder of 84.
Put 6 as the next digit of the answer. 
Result so far: 6646.61627906
Deduct 516 from 600 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

The final outcome is 6646.61627906, with a leftover of 8.4e-08.