99697392 divided by 831 
The aim is to understand the frequency of 831 in 99697392.

Step 1:
When dividing 9 by 831, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 831

Step 2:
831 goes into 99 0 times with a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Include the next digit (6) from the dividend after 99, then repeat: 996 / 831

Advancing to step 3:
The number 831 fits into 996 1 times, leaving a remainder of 165.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 831 from 996 leaves us with 165.
Include the next digit (9) from the dividend after 165, then repeat: 1659 / 831

Advancing to step 4:
If we divide 1659 by 831, we get 1 and a remainder of 828.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we take 831 away from 1659, we end up with 828.
Include the next digit (7) from the dividend after 828, then repeat: 8287 / 831

Going ahead to step 5:
The number 831 fits into 8287 9 times, leaving a remainder of 808.
Use 9 as the next digit of our solution. 
Result so far: 119.0
If we take 7479 away from 8287, we end up with 808.
Include the next digit (3) from the dividend after 808, then repeat: 8083 / 831

On to step 6:
When dividing 8083 by 831, we get 9 with a remainder of 604.
Use 9 as the next digit of our solution. 
Result so far: 1199.0
The remainder is 604 after subtracting 7479 from 8083.
Take the next digit (9) from the dividend and append it to 604, then repeat: 6049 / 831

On to step 7:
When dividing 6049 by 831, we get 7 with a remainder of 232.
Record the quotient 7 as the next digit in the result. 
Result so far: 11997.0
If we subtract 5817 from 6049, we get 232.
Take the next digit (2) from the dividend and append it to 232, then repeat: 2322 / 831

Step 8:
2322 divided by 831 is 2 with a remainder of 660.
The number 2 becomes the next digit in our result. 
Result so far: 119972.0
If we take 1662 away from 2322, we end up with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Moving on to step 9:
The number 831 fits into 6600 7 times, leaving a remainder of 783.
Use 7 as the next digit of our solution. 
Result so far: 119972.7
If we take 5817 away from 6600, we end up with 783.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7830, and continue the process.

Moving on to step 10:
When dividing 7830 by 831, we get 9 with a remainder of 351.
Record the quotient 9 as the next digit in the result. 
Result so far: 119972.79
The remainder is 351 after subtracting 7479 from 7830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Going ahead to step 11:
If we divide 3510 by 831, we get 4 and a remainder of 186.
Record the quotient 4 as the next digit in the result. 
Result so far: 119972.794
Subtract 3324 from 3510 to get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Advancing to step 12:
The number 831 fits into 1860 2 times, leaving a remainder of 198.
The number 2 becomes the next digit in our result. 
Result so far: 119972.7942
If we take 1662 away from 1860, we end up with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Let's proceed to step 13:
831 can be fit into 1980 2 times, resulting in a remainder of 318.
Record the quotient 2 as the next digit in the result. 
Result so far: 119972.79422
Deduct 1662 from 1980 and we're left with 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

The quotient of the division is 119972.79422, and the remainder is 0.000318.