210813 ÷ 31 
The aim is to understand the frequency of 31 in 210813.

Moving on to step 1:
31 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 31

Advancing to step 2:
21 divided by 31 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 31

Let's proceed to step 3:
31 goes into 210 6 times with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Subtracting 186 from 210 leaves us with 24.
Append the next digit (8) from the dividend to 24 and continue with: 248 / 31

Step 4:
When dividing 248 by 31, we get 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 68.0
If we subtract 248 from 248, we get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 31

Going ahead to step 5:
31 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 680.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 31

Let's proceed to step 6:
The number 31 fits into 13 0 times, leaving a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 6800.0
Subtract 0 from 13 to 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.

Moving on to step 7:
The number 31 fits into 130 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 6800.4
The remainder is 6 after subtracting 124 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
31 can be fit into 60 1 times, resulting in a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 6800.41
Deduct 31 from 60 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 9:
290 divided by 31 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 6800.419
Subtract 279 from 290 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 10:
110 divided by 31 is 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 6800.4193
The remainder is 17 after subtracting 93 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
When dividing 170 by 31, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 6800.41935
If we take 155 away from 170, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 12:
If we divide 150 by 31, we get 4 and a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 6800.419354
The remainder is 26 after subtracting 124 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 13:
The number 31 fits into 260 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 6800.4193548
Subtracting 248 from 260 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 14:
The number 31 fits into 120 3 times, leaving a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 6800.41935483
The remainder is 27 after subtracting 93 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The quotient of the division is 6800.41935483, and the remainder is 2.7e-08.