96403021 divided by 31 
The aim is to understand the frequency of 31 in 96403021.

Going ahead to step 1:
31 goes into 9 0 times with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 31

Step 2:
If we divide 96 by 31, we get 3 and a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 93 from 96 to get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 31

Let's proceed to step 3:
The number 31 fits into 34 1 times, leaving a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 31.0
The remainder is 3 after subtracting 31 from 34.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 31

Step 4:
If we divide 30 by 31, we get 0 and a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 310.0
Subtract 0 from 30 to get 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 31

Step 5:
The number 31 fits into 303 9 times, leaving a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 3109.0
If we take 279 away from 303, we end up with 24.
Include the next digit (0) from the dividend after 24, then repeat: 240 / 31

Moving on to step 6:
If we divide 240 by 31, we get 7 and a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 31097.0
Deduct 217 from 240 and we're left with 23.
Bring next digit (2) of the dividend behind the 23 and repeat the process: 232 / 31

Advancing to step 7:
232 divided by 31 is 7 with a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 310977.0
Subtract 217 from 232 to get 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 31

Advancing to step 8:
31 can be fit into 151 4 times, resulting in a remainder of 27.
The number 4 becomes the next digit in our result. 
Result so far: 3109774.0
Subtracting 124 from 151 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 9:
The number 31 fits into 270 8 times, leaving a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 3109774.8
The remainder is 22 after subtracting 248 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
31 goes into 220 7 times with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 3109774.87
Subtract 217 from 220 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
If we divide 30 by 31, we get 0 and a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 3109774.87
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 12:
31 can be fit into 300 9 times, resulting in a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 3109774.8709
The remainder is 21 after subtracting 279 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 13:
The number 31 fits into 210 6 times, leaving a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 3109774.87096
Deduct 186 from 210 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 14:
If we divide 240 by 31, we get 7 and a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 3109774.870967
If we take 217 away from 240, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 15:
The number 31 fits into 230 7 times, leaving a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 3109774.8709677
If we subtract 217 from 230, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 3109774.8709677 with a balance of 1.3e-07.