We look at the division of 35864069 by 831 
The aim is to understand the frequency of 831 in 35864069.

Step 1:
831 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 831

Let's proceed to step 2:
The number 831 fits into 35 0 times, leaving a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Include the next digit (8) from the dividend after 35, then repeat: 358 / 831

Advancing to step 3:
If we divide 358 by 831, we get 0 and a remainder of 358.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 358, we end up with 358.
Fetch the next digit (6) from the dividend, attach it to 358 and continue: 3586 / 831

Let's proceed to step 4:
3586 divided by 831 is 4 with a remainder of 262.
The next digit of our result is 4. 
Result so far: 4.0
If we take 3324 away from 3586, we end up with 262.
Fetch the next digit (4) from the dividend, attach it to 262 and continue: 2624 / 831

Advancing to step 5:
If we divide 2624 by 831, we get 3 and a remainder of 131.
The next digit of our result is 3. 
Result so far: 43.0
If we subtract 2493 from 2624, we get 131.
Grab the next digit (0) from the dividend, add it to 131, then carry on: 1310 / 831

On to step 6:
1310 divided by 831 is 1 with a remainder of 479.
Put 1 as the next digit of the answer. 
Result so far: 431.0
If we take 831 away from 1310, we end up with 479.
Include the next digit (6) from the dividend after 479, then repeat: 4796 / 831

Moving on to step 7:
831 goes into 4796 5 times with a remainder of 641.
Use 5 as the next digit of our solution. 
Result so far: 4315.0
Subtract 4155 from 4796 to get 641.
Append the next digit (9) from the dividend to 641 and continue with: 6419 / 831

Let's proceed to step 8:
831 can be fit into 6419 7 times, resulting in a remainder of 602.
Write down 7 as next digit of the result. 
Result so far: 43157.0
Deduct 5817 from 6419 and we're left with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Moving on to step 9:
If we divide 6020 by 831, we get 7 and a remainder of 203.
The number 7 becomes the next digit in our result. 
Result so far: 43157.7
The remainder is 203 after subtracting 5817 from 6020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Advancing to step 10:
The number 831 fits into 2030 2 times, leaving a remainder of 368.
Write down 2 as next digit of the result. 
Result so far: 43157.72
Subtracting 1662 from 2030 leaves us with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Advancing to step 11:
831 goes into 3680 4 times with a remainder of 356.
Put 4 as the next digit of the answer. 
Result so far: 43157.724
If we take 3324 away from 3680, we end up with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 12:
831 can be fit into 3560 4 times, resulting in a remainder of 236.
The number 4 becomes the next digit in our result. 
Result so far: 43157.7244
Subtract 3324 from 3560 to get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

The quotient of the division is 43157.7244, and the remainder is 0.00236.