We divide 724900 by 31
The aim is to understand the frequency of 31 in 724900.

Advancing to step 1:
31 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 31

On 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
Subtract 62 from 72 to get 10.
Take the next digit (4) from the dividend and append it to 10, then repeat: 104 / 31

On to step 3:
When dividing 104 by 31, we get 3 with a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 23.0
The remainder is 11 after subtracting 93 from 104.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 31

Step 4:
31 can be fit into 119 3 times, resulting in a remainder of 26.
Put 3 as the next digit of the answer. 
Result so far: 233.0
If we take 93 away from 119, we end up with 26.
Bring next digit (0) of the dividend behind the 26 and repeat the process: 260 / 31

Let's proceed to step 5:
If we divide 260 by 31, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 2338.0
Deduct 248 from 260 and we're left with 12.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 31

Step 6:
31 can be fit into 120 3 times, resulting in a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 23383.0
If we subtract 93 from 120, we 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.

Going ahead to step 7:
If we divide 270 by 31, we get 8 and a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 23383.8
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.

Let's proceed to step 8:
31 can be fit into 220 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 23383.87
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.

Advancing to step 9:
31 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 23383.87
Subtract 0 from 30 to 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.

Step 10:
300 divided by 31 is 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 23383.8709
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 11:
210 divided by 31 is 6 with a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 23383.87096
The remainder is 24 after subtracting 186 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 12:
If we divide 240 by 31, we get 7 and a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 23383.870967
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.

Advancing to step 13:
If we divide 230 by 31, we get 7 and a remainder of 13.
The next digit of our result is 7. 
Result so far: 23383.8709677
Subtract 217 from 230 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.

The quotient of the division is 23383.8709677, and the remainder is 1.3e-07.