We divide 622510 by 31
The aim is to understand the frequency of 31 in 622510.

Step 1:
When dividing 6 by 31, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 31

Going ahead to step 2:
When dividing 62 by 31, we get 2 with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 62 from 62 and we're left with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 31

Going ahead to step 3:
The number 31 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 31

On to step 4:
31 can be fit into 25 0 times, resulting in a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 200.0
If we subtract 0 from 25, we get 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 31

Step 5:
251 divided by 31 is 8 with a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 2008.0
Deduct 248 from 251 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 31

Moving on to step 6:
The number 31 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 20080.0
If we take 0 away from 30, we end up with 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 7:
31 can be fit into 300 9 times, resulting in a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 20080.9
Deduct 279 from 300 and we're left 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.

Moving on to step 8:
When dividing 210 by 31, we get 6 with a remainder of 24.
The next digit of our result is 6. 
Result so far: 20080.96
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 9:
If we divide 240 by 31, we get 7 and a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 20080.967
Deduct 217 from 240 and we're left 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.

Going ahead to step 10:
The number 31 fits into 230 7 times, leaving a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 20080.9677
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.

Our division results in 20080.9677 with a remaining 0.00013.