We're dividing 86102960 by 253 
The aim is to understand the frequency of 253 in 86102960.

On to step 1:
The number 253 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 253

Going ahead to step 2:
If we divide 86 by 253, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Bring next digit (1) of the dividend behind the 86 and repeat the process: 861 / 253

On to step 3:
The number 253 fits into 861 3 times, leaving a remainder of 102.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 102 after subtracting 759 from 861.
Bring next digit (0) of the dividend behind the 102 and repeat the process: 1020 / 253

Let's proceed to step 4:
1020 divided by 253 is 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 34.0
Subtracting 1012 from 1020 leaves us with 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 253

Going ahead to step 5:
253 goes into 82 0 times with a remainder of 82.
Put 0 as the next digit of the answer. 
Result so far: 340.0
If we take 0 away from 82, we end up with 82.
Bring next digit (9) of the dividend behind the 82 and repeat the process: 829 / 253

Moving on to step 6:
829 divided by 253 is 3 with a remainder of 70.
The next digit of our result is 3. 
Result so far: 3403.0
The remainder is 70 after subtracting 759 from 829.
Bring next digit (6) of the dividend behind the 70 and repeat the process: 706 / 253

On to step 7:
253 goes into 706 2 times with a remainder of 200.
Put 2 as the next digit of the answer. 
Result so far: 34032.0
If we take 506 away from 706, we end up with 200.
Append the next digit (0) from the dividend to 200 and continue with: 2000 / 253

Moving on to step 8:
The number 253 fits into 2000 7 times, leaving a remainder of 229.
The next digit of our result is 7. 
Result so far: 340327.0
Deduct 1771 from 2000 and we're left with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

On to step 9:
2290 divided by 253 is 9 with a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 340327.9
The remainder is 13 after subtracting 2277 from 2290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 10:
253 can be fit into 130 0 times, resulting in a remainder of 130.
Put 0 as the next digit of the answer. 
Result so far: 340327.9
If we take 0 away from 130, we end up with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 11:
253 goes into 1300 5 times with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 340327.905
The remainder is 35 after subtracting 1265 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 12:
350 divided by 253 is 1 with a remainder of 97.
Write down 1 as next digit of the result. 
Result so far: 340327.9051
Deduct 253 from 350 and we're left with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 13:
When dividing 970 by 253, we get 3 with a remainder of 211.
The number 3 becomes the next digit in our result. 
Result so far: 340327.90513
Subtracting 759 from 970 leaves us with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

On to step 14:
253 goes into 2110 8 times with a remainder of 86.
Put 8 as the next digit of the answer. 
Result so far: 340327.905138
Deduct 2024 from 2110 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Moving on to step 15:
If we divide 860 by 253, we get 3 and a remainder of 101.
Record the quotient 3 as the next digit in the result. 
Result so far: 340327.9051383
Deduct 759 from 860 and we're left with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 16:
If we divide 1010 by 253, we get 3 and a remainder of 251.
Write down 3 as next digit of the result. 
Result so far: 340327.90513833
Subtracting 759 from 1010 leaves us with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

The final result is 340327.90513833 with a remainder of 2.51e-07.