874621 ÷ 39 
The aim is to understand the frequency of 39 in 874621.

Going ahead to step 1:
8 divided by 39 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 39

Moving on to step 2:
If we divide 87 by 39, we get 2 and a remainder of 9.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 9 after subtracting 78 from 87.
Grab the next digit (4) from the dividend, add it to 9, then carry on: 94 / 39

Going ahead to step 3:
If we divide 94 by 39, we get 2 and a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 22.0
If we take 78 away from 94, we end up with 16.
Include the next digit (6) from the dividend after 16, then repeat: 166 / 39

Step 4:
39 can be fit into 166 4 times, resulting in a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 224.0
If we subtract 156 from 166, we get 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 39

Let's proceed to step 5:
The number 39 fits into 102 2 times, leaving a remainder of 24.
The next digit of our result is 2. 
Result so far: 2242.0
If we take 78 away from 102, we end up with 24.
Take the next digit (1) from the dividend and append it to 24, then repeat: 241 / 39

Let's proceed to step 6:
241 divided by 39 is 6 with a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 22426.0
If we take 234 away from 241, we end up 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.

On to step 7:
39 goes into 70 1 times with a remainder of 31.
The next digit of our result is 1. 
Result so far: 22426.1
Subtract 39 from 70 to 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.

Let's proceed to step 8:
39 can be fit into 310 7 times, resulting in a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 22426.17
If we subtract 273 from 310, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 9:
370 divided by 39 is 9 with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 22426.179
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.

Let's proceed to step 10:
39 can be fit into 190 4 times, resulting in a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 22426.1794
Deduct 156 from 190 and we're left with 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 11:
If we divide 340 by 39, we get 8 and a remainder of 28.
The next digit of our result is 8. 
Result so far: 22426.17948
If we take 312 away from 340, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
39 can be fit into 280 7 times, resulting in a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 22426.179487
Subtracting 273 from 280 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.

Advancing to step 13:
70 divided by 39 is 1 with a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 22426.1794871
If we take 39 away from 70, we end up with 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 14:
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: 22426.17948717
Subtract 273 from 310 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

In conclusion, the division gives 22426.17948717 with a balance of 3.7e-08.