551369 ÷ 39 
The aim is to understand the frequency of 39 in 551369.

Going ahead to step 1:
39 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 39

Going ahead to step 2:
39 goes into 55 1 times with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 39 from 55 leaves us with 16.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 39

Advancing to step 3:
When dividing 161 by 39, we get 4 with a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we take 156 away from 161, we end up with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 39

Going ahead to step 4:
The number 39 fits into 53 1 times, leaving a remainder of 14.
The next digit of our result is 1. 
Result so far: 141.0
Subtracting 39 from 53 leaves us with 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 39

Going ahead to step 5:
The number 39 fits into 146 3 times, leaving a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 1413.0
If we subtract 117 from 146, we get 29.
Fetch the next digit (9) from the dividend, attach it to 29 and continue: 299 / 39

Advancing to step 6:
The number 39 fits into 299 7 times, leaving a remainder of 26.
The next digit of our result is 7. 
Result so far: 14137.0
Subtracting 273 from 299 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 7:
260 divided by 39 is 6 with a remainder of 26.
Record the quotient 6 as the next digit in the result. 
Result so far: 14137.6
Deduct 234 from 260 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
260 divided by 39 is 6 with a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 14137.66
Subtracting 234 from 260 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

In conclusion, the division gives 14137.66 with a balance of 0.026.