536653 divided by 39 
The aim is to understand the frequency of 39 in 536653.

On to step 1:
If we divide 5 by 39, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 39

Moving on to step 2:
39 can be fit into 53 1 times, resulting in a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 39 from 53, we get 14.
Grab the next digit (6) from the dividend, add it to 14, then carry on: 146 / 39

Going ahead to step 3:
If we divide 146 by 39, we get 3 and a remainder of 29.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Subtracting 117 from 146 leaves us with 29.
Include the next digit (6) from the dividend after 29, then repeat: 296 / 39

Going ahead to step 4:
39 can be fit into 296 7 times, resulting in a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 137.0
Subtract 273 from 296 to get 23.
Take the next digit (5) from the dividend and append it to 23, then repeat: 235 / 39

Moving on to step 5:
When dividing 235 by 39, we get 6 with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 1376.0
Deduct 234 from 235 and we're left with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 39

On to step 6:
The number 39 fits into 13 0 times, leaving a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 13760.0
Subtract 0 from 13 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
130 divided by 39 is 3 with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 13760.3
If we take 117 away from 130, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 8:
39 can be fit into 130 3 times, resulting in a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 13760.33
Deduct 117 from 130 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The final result is 13760.33 with a remainder of 0.013.