671541 divided by 39 
The aim is to understand the frequency of 39 in 671541.

Advancing to step 1:
If we divide 6 by 39, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 39

Advancing to step 2:
When dividing 67 by 39, we get 1 with a remainder of 28.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 28 after subtracting 39 from 67.
Bring next digit (1) of the dividend behind the 28 and repeat the process: 281 / 39

On to step 3:
39 goes into 281 7 times with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtract 273 from 281 to get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 39

Advancing to step 4:
39 can be fit into 85 2 times, resulting in a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 172.0
If we take 78 away from 85, we end up with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 39

On to step 5:
74 divided by 39 is 1 with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1721.0
Subtracting 39 from 74 leaves us with 35.
Grab the next digit (1) from the dividend, add it to 35, then carry on: 351 / 39

Moving on to step 6:
When dividing 351 by 39, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 17219.0
If we take 351 away from 351, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 7:
39 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17219.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
When dividing 0 by 39, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 17219.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 17219.0 with a remaining 0.0.