We look at the division of 57363387 by 31 
The aim is to understand the frequency of 31 in 57363387.

Let's proceed to step 1:
If we divide 5 by 31, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 31

Step 2:
When dividing 57 by 31, we get 1 with a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 31 away from 57, we end up with 26.
Fetch the next digit (3) from the dividend, attach it to 26 and continue: 263 / 31

On to step 3:
If we divide 263 by 31, we get 8 and a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtracting 248 from 263 leaves us with 15.
Include the next digit (6) from the dividend after 15, then repeat: 156 / 31

Advancing to step 4:
31 can be fit into 156 5 times, resulting in a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 185.0
If we subtract 155 from 156, we get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 31

Step 5:
13 divided by 31 is 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 1850.0
Deduct 0 from 13 and we're left with 13.
Bring next digit (3) of the dividend behind the 13 and repeat the process: 133 / 31

Let's proceed to step 6:
If we divide 133 by 31, we get 4 and a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 18504.0
Subtract 124 from 133 to get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 31

Step 7:
The number 31 fits into 98 3 times, leaving a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 185043.0
Deduct 93 from 98 and we're left with 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 31

Advancing to step 8:
If we divide 57 by 31, we get 1 and a remainder of 26.
Write down 1 as next digit of the result. 
Result so far: 1850431.0
Subtract 31 from 57 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
When dividing 260 by 31, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 1850431.8
If we subtract 248 from 260, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
31 can be fit into 120 3 times, resulting in a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 1850431.83
Subtract 93 from 120 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 11:
31 can be fit into 270 8 times, resulting in a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 1850431.838
Subtract 248 from 270 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 12:
The number 31 fits into 220 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 1850431.8387
If we take 217 away from 220, we end up with 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 13:
The number 31 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 1850431.8387
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 14:
If we divide 300 by 31, we get 9 and a remainder of 21.
The next digit of our result is 9. 
Result so far: 1850431.838709
If we take 279 away from 300, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 15:
31 can be fit into 210 6 times, resulting in a remainder of 24.
The next digit of our result is 6. 
Result so far: 1850431.8387096
Subtracting 186 from 210 leaves us 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.

On to step 16:
31 goes into 240 7 times with a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 1850431.83870967
Subtract 217 from 240 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

The final outcome is 1850431.83870967, with a leftover of 2.3e-08.