491951 ÷ 31 
The aim is to understand the frequency of 31 in 491951.

Going ahead to step 1:
When dividing 4 by 31, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 31

Going ahead to step 2:
The number 31 fits into 49 1 times, leaving a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 31 away from 49, we end up with 18.
Include the next digit (1) from the dividend after 18, then repeat: 181 / 31

Let's proceed to step 3:
If we divide 181 by 31, we get 5 and a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 155 from 181 to get 26.
Include the next digit (9) from the dividend after 26, then repeat: 269 / 31

Let's proceed to step 4:
31 goes into 269 8 times with a remainder of 21.
The next digit of our result is 8. 
Result so far: 158.0
If we subtract 248 from 269, we get 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 31

Going ahead to step 5:
When dividing 215 by 31, we get 6 with a remainder of 29.
The number 6 becomes the next digit in our result. 
Result so far: 1586.0
If we subtract 186 from 215, we get 29.
Grab the next digit (1) from the dividend, add it to 29, then carry on: 291 / 31

Let's proceed to step 6:
If we divide 291 by 31, we get 9 and a remainder of 12.
Put 9 as the next digit of the answer. 
Result so far: 15869.0
The remainder is 12 after subtracting 279 from 291.
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 7:
If we divide 120 by 31, we get 3 and a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 15869.3
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.

On to step 8:
31 can be fit into 270 8 times, resulting in a remainder of 22.
The next digit of our result is 8. 
Result so far: 15869.38
If we take 248 away from 270, we end up 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.

Going ahead to step 9:
If we divide 220 by 31, we get 7 and a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 15869.387
Subtracting 217 from 220 leaves us 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.

On to step 10:
30 divided by 31 is 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 15869.387
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.

Step 11:
31 goes into 300 9 times with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 15869.38709
Subtracting 279 from 300 leaves us 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.

On to step 12:
31 goes into 210 6 times with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 15869.387096
Subtract 186 from 210 to 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.

Advancing to step 13:
31 goes into 240 7 times with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 15869.3870967
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.

Moving on to step 14:
When dividing 230 by 31, we get 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 15869.38709677
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.

The quotient of the division is 15869.38709677, and the remainder is 1.3e-08.