615237 ÷ 31 
The aim is to understand the frequency of 31 in 615237.

On to step 1:
If we divide 6 by 31, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 31

Going ahead to step 2:
31 goes into 61 1 times with a remainder of 30.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 31 from 61, we get 30.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 31

Step 3:
31 can be fit into 305 9 times, resulting in a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 19.0
The remainder is 26 after subtracting 279 from 305.
Bring next digit (2) of the dividend behind the 26 and repeat the process: 262 / 31

Moving on to step 4:
If we divide 262 by 31, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 198.0
If we subtract 248 from 262, we get 14.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 31

Going ahead to step 5:
31 can be fit into 143 4 times, resulting in a remainder of 19.
Write down 4 as next digit of the result. 
Result so far: 1984.0
If we subtract 124 from 143, we get 19.
Grab the next digit (7) from the dividend, add it to 19, then carry on: 197 / 31

On to step 6:
When dividing 197 by 31, we get 6 with a remainder of 11.
Use 6 as the next digit of our solution. 
Result so far: 19846.0
Subtract 186 from 197 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.

On to step 7:
The number 31 fits into 110 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 19846.3
Subtracting 93 from 110 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 8:
170 divided by 31 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 19846.35
Subtract 155 from 170 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 9:
If we divide 150 by 31, we get 4 and a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 19846.354
If we subtract 124 from 150, we 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.

On to step 10:
31 can be fit into 260 8 times, resulting in a remainder of 12.
The next digit of our result is 8. 
Result so far: 19846.3548
The remainder is 12 after subtracting 248 from 260.
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 11:
The number 31 fits into 120 3 times, leaving a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 19846.35483
Deduct 93 from 120 and we're left 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.

Step 12:
31 can be fit into 270 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 19846.354838
Subtracting 248 from 270 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 13:
If we divide 220 by 31, we get 7 and a remainder of 3.
The next digit of our result is 7. 
Result so far: 19846.3548387
Deduct 217 from 220 and we're left 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.

Step 14:
30 divided by 31 is 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 19846.3548387
Deduct 0 from 30 and we're left 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.

The final outcome is 19846.3548387, with a leftover of 3e-08.