We divide 215851 by 39
The aim is to understand the frequency of 39 in 215851.

Let's proceed to step 1:
If we divide 2 by 39, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 39

Moving on to step 2:
39 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 39

Advancing to step 3:
39 goes into 215 5 times with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 195 away from 215, we end up with 20.
Take the next digit (8) from the dividend and append it to 20, then repeat: 208 / 39

On to step 4:
39 can be fit into 208 5 times, resulting in a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 55.0
If we subtract 195 from 208, we get 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 39

On to step 5:
39 can be fit into 135 3 times, resulting in a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 553.0
Subtract 117 from 135 to get 18.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 39

Advancing to step 6:
The number 39 fits into 181 4 times, leaving a remainder of 25.
The number 4 becomes the next digit in our result. 
Result so far: 5534.0
If we subtract 156 from 181, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
The number 39 fits into 250 6 times, leaving a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 5534.6
Subtract 234 from 250 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
39 goes into 160 4 times with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 5534.64
Subtracting 156 from 160 leaves us 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 9:
39 can be fit into 40 1 times, resulting in a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 5534.641
If we subtract 39 from 40, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
If we divide 10 by 39, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 5534.641
Subtract 0 from 10 to get 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 11:
39 goes into 100 2 times with a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 5534.64102
If we subtract 78 from 100, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
If we divide 220 by 39, we get 5 and a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 5534.641025
If we subtract 195 from 220, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 13:
250 divided by 39 is 6 with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 5534.6410256
Subtract 234 from 250 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 14:
If we divide 160 by 39, we get 4 and a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 5534.64102564
If we take 156 away from 160, 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.

In conclusion, the division gives 5534.64102564 with a balance of 4e-09.