We're dividing 864800 by 39 
The aim is to understand the frequency of 39 in 864800.

Step 1:
39 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 39

Advancing to step 2:
39 can be fit into 86 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 78 away from 86, we end up with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 39

Advancing to step 3:
The number 39 fits into 84 2 times, leaving a remainder of 6.
The next digit of our result is 2. 
Result so far: 22.0
Subtracting 78 from 84 leaves us with 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 39

Step 4:
39 can be fit into 68 1 times, resulting in a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 221.0
Subtracting 39 from 68 leaves us with 29.
Grab the next digit (0) from the dividend, add it to 29, then carry on: 290 / 39

Going ahead to step 5:
If we divide 290 by 39, we get 7 and a remainder of 17.
The next digit of our result is 7. 
Result so far: 2217.0
Deduct 273 from 290 and we're left with 17.
Bring next digit (0) of the dividend behind the 17 and repeat the process: 170 / 39

Advancing to step 6:
If we divide 170 by 39, we get 4 and a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 22174.0
If we take 156 away from 170, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
140 divided by 39 is 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 22174.3
Subtracting 117 from 140 leaves us 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.

On to step 8:
When dividing 230 by 39, we get 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 22174.35
Deduct 195 from 230 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 9:
39 can be fit into 350 8 times, resulting in a remainder of 38.
Record the quotient 8 as the next digit in the result. 
Result so far: 22174.358
Deduct 312 from 350 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 10:
39 can be fit into 380 9 times, resulting in a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 22174.3589
Deduct 351 from 380 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 11:
When dividing 290 by 39, we get 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 22174.35897
Deduct 273 from 290 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 12:
The number 39 fits into 170 4 times, leaving a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 22174.358974
Deduct 156 from 170 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 13:
The number 39 fits into 140 3 times, leaving a remainder of 23.
Write down 3 as next digit of the result. 
Result so far: 22174.3589743
If we take 117 away from 140, we end up 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.

Going ahead to step 14:
When dividing 230 by 39, we get 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 22174.35897435
If we take 195 away from 230, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 22174.35897435 and a remainder of 3.5e-08.