252459 ÷ 86 
The aim is to understand the frequency of 86 in 252459.

Advancing to step 1:
The number 86 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 86

Advancing to step 2:
86 can be fit into 25 0 times, resulting in a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Grab the next digit (2) from the dividend, add it to 25, then carry on: 252 / 86

Moving on to step 3:
When dividing 252 by 86, we get 2 with a remainder of 80.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 172 from 252, we get 80.
Grab the next digit (4) from the dividend, add it to 80, then carry on: 804 / 86

On to step 4:
86 can be fit into 804 9 times, resulting in a remainder of 30.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
If we subtract 774 from 804, we get 30.
Include the next digit (5) from the dividend after 30, then repeat: 305 / 86

Let's proceed to step 5:
305 divided by 86 is 3 with a remainder of 47.
Write down 3 as next digit of the result. 
Result so far: 293.0
If we take 258 away from 305, we end up with 47.
Append the next digit (9) from the dividend to 47 and continue with: 479 / 86

Moving on to step 6:
86 goes into 479 5 times with a remainder of 49.
The next digit of our result is 5. 
Result so far: 2935.0
If we take 430 away from 479, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 7:
86 can be fit into 490 5 times, resulting in a remainder of 60.
Record the quotient 5 as the next digit in the result. 
Result so far: 2935.5
If we subtract 430 from 490, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 8:
If we divide 600 by 86, we get 6 and a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 2935.56
If we take 516 away from 600, we end up 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.

Step 9:
86 can be fit into 840 9 times, resulting in a remainder of 66.
Use 9 as the next digit of our solution. 
Result so far: 2935.569
If we subtract 774 from 840, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 10:
When dividing 660 by 86, we get 7 with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 2935.5697
Subtract 602 from 660 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 11:
If we divide 580 by 86, we get 6 and a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 2935.56976
If we subtract 516 from 580, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 12:
The number 86 fits into 640 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 2935.569767
The remainder is 38 after subtracting 602 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 13:
When dividing 380 by 86, we get 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 2935.5697674
If we take 344 away from 380, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 14:
86 can be fit into 360 4 times, resulting in a remainder of 16.
The next digit of our result is 4. 
Result so far: 2935.56976744
Deduct 344 from 360 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The quotient of the division is 2935.56976744, and the remainder is 1.6e-08.