675399 divided by 31 
The aim is to understand the frequency of 31 in 675399.

Step 1:
When dividing 6 by 31, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 31

Step 2:
If we divide 67 by 31, we get 2 and a remainder of 5.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 62 from 67 leaves us with 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 31

Advancing to step 3:
55 divided by 31 is 1 with a remainder of 24.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtracting 31 from 55 leaves us with 24.
Grab the next digit (3) from the dividend, add it to 24, then carry on: 243 / 31

Step 4:
If we divide 243 by 31, we get 7 and a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 217.0
If we take 217 away from 243, we end up with 26.
Grab the next digit (9) from the dividend, add it to 26, then carry on: 269 / 31

Moving on to step 5:
269 divided by 31 is 8 with a remainder of 21.
Use 8 as the next digit of our solution. 
Result so far: 2178.0
Deduct 248 from 269 and we're left with 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 31

Let's proceed to step 6:
When dividing 219 by 31, we get 7 with a remainder of 2.
The next digit of our result is 7. 
Result so far: 21787.0
The remainder is 2 after subtracting 217 from 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
31 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 21787.0
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
31 can be fit into 200 6 times, resulting in a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 21787.06
The remainder is 14 after subtracting 186 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
When dividing 140 by 31, we get 4 with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 21787.064
If we take 124 away from 140, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 10:
When dividing 160 by 31, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 21787.0645
If we subtract 155 from 160, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 11:
31 goes into 50 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 21787.06451
If we subtract 31 from 50, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 12:
If we divide 190 by 31, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 21787.064516
If we take 186 away from 190, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 13:
The number 31 fits into 40 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 21787.0645161
The remainder is 9 after subtracting 31 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 14:
31 can be fit into 90 2 times, resulting in a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 21787.06451612
The remainder is 28 after subtracting 62 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 21787.06451612 with a remaining 2.8e-08.