725519 divided by 31 
The aim is to understand the frequency of 31 in 725519.

Step 1:
The number 31 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 31

Let's proceed to step 2:
31 can be fit into 72 2 times, resulting in a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 62 from 72, we get 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 31

Let's proceed to step 3:
When dividing 105 by 31, we get 3 with a remainder of 12.
The next digit of our result is 3. 
Result so far: 23.0
Subtract 93 from 105 to get 12.
Include the next digit (5) from the dividend after 12, then repeat: 125 / 31

Advancing to step 4:
31 goes into 125 4 times with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 234.0
Deduct 124 from 125 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 31

Advancing to step 5:
When dividing 11 by 31, we get 0 with a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 2340.0
If we subtract 0 from 11, we get 11.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 31

Moving on to step 6:
The number 31 fits into 119 3 times, leaving a remainder of 26.
The next digit of our result is 3. 
Result so far: 23403.0
If we take 93 away from 119, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 7:
31 goes into 260 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 23403.8
Deduct 248 from 260 and we're left 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 8:
31 goes into 120 3 times with a remainder of 27.
The next digit of our result is 3. 
Result so far: 23403.83
If we take 93 away from 120, we end up 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 9:
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: 23403.838
If we subtract 248 from 270, we 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.

On to step 10:
When dividing 220 by 31, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 23403.8387
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.

Step 11:
If we divide 30 by 31, we get 0 and a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 23403.8387
Subtracting 0 from 30 leaves us 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.

Advancing to step 12:
If we divide 300 by 31, we get 9 and a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 23403.838709
If we subtract 279 from 300, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 13:
When dividing 210 by 31, we get 6 with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 23403.8387096
If we subtract 186 from 210, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 14:
31 can be fit into 240 7 times, resulting in a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 23403.83870967
Subtracting 217 from 240 leaves us 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.

Our division results in 23403.83870967 with a remaining 2.3e-08.