We're dividing 436819 by 39 
The aim is to understand the frequency of 39 in 436819.

On to step 1:
If we divide 4 by 39, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 39

On to step 2:
39 can be fit into 43 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 4 after subtracting 39 from 43.
Take the next digit (6) from the dividend and append it to 4, then repeat: 46 / 39

Step 3:
39 can be fit into 46 1 times, resulting in a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
The remainder is 7 after subtracting 39 from 46.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 39

Let's proceed to step 4:
If we divide 78 by 39, we get 2 and a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 112.0
If we take 78 away from 78, we end up with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 39

On to step 5:
When dividing 1 by 39, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 1120.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 39

Step 6:
If we divide 19 by 39, we get 0 and a remainder of 19.
The next digit of our result is 0. 
Result so far: 11200.0
Subtract 0 from 19 to 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 7:
When dividing 190 by 39, we get 4 with a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 11200.4
If we subtract 156 from 190, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 8:
340 divided by 39 is 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 11200.48
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
The number 39 fits into 280 7 times, leaving a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 11200.487
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 10:
If we divide 70 by 39, we get 1 and a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 11200.4871
If we subtract 39 from 70, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 11:
The number 39 fits into 310 7 times, leaving a remainder of 37.
Write down 7 as next digit of the result. 
Result so far: 11200.48717
If we take 273 away from 310, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 12:
When dividing 370 by 39, we get 9 with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 11200.487179
Subtract 351 from 370 to 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 13:
The number 39 fits into 190 4 times, leaving a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 11200.4871794
The remainder is 34 after subtracting 156 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 14:
39 can be fit into 340 8 times, resulting in a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 11200.48717948
Subtract 312 from 340 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 11200.48717948, and the remainder is 2.8e-08.