We're dividing 81963394 by 259 
The aim is to understand the frequency of 259 in 81963394.

On to step 1:
If we divide 8 by 259, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 259

Going ahead to step 2:
259 can be fit into 81 0 times, resulting in a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Take the next digit (9) from the dividend and append it to 81, then repeat: 819 / 259

Going ahead to step 3:
The number 259 fits into 819 3 times, leaving a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 777 from 819 to get 42.
Bring next digit (6) of the dividend behind the 42 and repeat the process: 426 / 259

Moving on to step 4:
426 divided by 259 is 1 with a remainder of 167.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
Subtracting 259 from 426 leaves us with 167.
Take the next digit (3) from the dividend and append it to 167, then repeat: 1673 / 259

Advancing to step 5:
If we divide 1673 by 259, we get 6 and a remainder of 119.
Record the quotient 6 as the next digit in the result. 
Result so far: 316.0
If we subtract 1554 from 1673, we get 119.
Grab the next digit (3) from the dividend, add it to 119, then carry on: 1193 / 259

Going ahead to step 6:
When dividing 1193 by 259, we get 4 with a remainder of 157.
Use 4 as the next digit of our solution. 
Result so far: 3164.0
The remainder is 157 after subtracting 1036 from 1193.
Take the next digit (9) from the dividend and append it to 157, then repeat: 1579 / 259

Moving on to step 7:
259 goes into 1579 6 times with a remainder of 25.
The next digit of our result is 6. 
Result so far: 31646.0
Subtract 1554 from 1579 to get 25.
Take the next digit (4) from the dividend and append it to 25, then repeat: 254 / 259

Step 8:
When dividing 254 by 259, we get 0 with a remainder of 254.
The next digit of our result is 0. 
Result so far: 316460.0
Subtract 0 from 254 to get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Let's proceed to step 9:
If we divide 2540 by 259, we get 9 and a remainder of 209.
The next digit of our result is 9. 
Result so far: 316460.9
If we subtract 2331 from 2540, we get 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Going ahead to step 10:
259 goes into 2090 8 times with a remainder of 18.
The next digit of our result is 8. 
Result so far: 316460.98
Subtract 2072 from 2090 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
The number 259 fits into 180 0 times, leaving a remainder of 180.
The next digit of our result is 0. 
Result so far: 316460.98
If we subtract 0 from 180, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 12:
If we divide 1800 by 259, we get 6 and a remainder of 246.
Write down 6 as next digit of the result. 
Result so far: 316460.9806
Deduct 1554 from 1800 and we're left with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 13:
When dividing 2460 by 259, we get 9 with a remainder of 129.
Write down 9 as next digit of the result. 
Result so far: 316460.98069
The remainder is 129 after subtracting 2331 from 2460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Step 14:
The number 259 fits into 1290 4 times, leaving a remainder of 254.
The next digit of our result is 4. 
Result so far: 316460.980694
Subtracting 1036 from 1290 leaves us with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Going ahead to step 15:
The number 259 fits into 2540 9 times, leaving a remainder of 209.
Write down 9 as next digit of the result. 
Result so far: 316460.9806949
If we take 2331 away from 2540, we end up with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Let's proceed to step 16:
If we divide 2090 by 259, we get 8 and a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 316460.98069498
Deduct 2072 from 2090 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 316460.98069498 and a remainder of 1.8e-08.