436140 divided by 31 
The aim is to understand the frequency of 31 in 436140.

On to step 1:
When dividing 4 by 31, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 31

On to step 2:
If we divide 43 by 31, we get 1 and a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 12 after subtracting 31 from 43.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 31

Advancing to step 3:
If we divide 126 by 31, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 14.0
The remainder is 2 after subtracting 124 from 126.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 31

Step 4:
When dividing 21 by 31, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 140.0
Subtract 0 from 21 to get 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 31

Advancing to step 5:
The number 31 fits into 214 6 times, leaving a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 1406.0
If we subtract 186 from 214, we get 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 31

Step 6:
31 can be fit into 280 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 14069.0
If we take 279 away from 280, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
If we divide 10 by 31, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 14069.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
If we divide 100 by 31, we get 3 and a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 14069.03
Subtracting 93 from 100 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 9:
31 goes into 70 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 14069.032
Subtract 62 from 70 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
80 divided by 31 is 2 with a remainder of 18.
The next digit of our result is 2. 
Result so far: 14069.0322
Subtract 62 from 80 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 14069.0322, and the remainder is 0.00018.