3729 ÷ 71 
The aim is to understand the frequency of 71 in 3729.

Going ahead to step 1:
When dividing 3 by 71, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 71

Moving on to step 2:
37 divided by 71 is 0 with a remainder of 37.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 37, we end up with 37.
Bring next digit (2) of the dividend behind the 37 and repeat the process: 372 / 71

Going ahead to step 3:
71 can be fit into 372 5 times, resulting in a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 355 from 372 and we're left with 17.
Append the next digit (9) from the dividend to 17 and continue with: 179 / 71

Let's proceed to step 4:
71 goes into 179 2 times with a remainder of 37.
The next digit of our result is 2. 
Result so far: 52.0
Deduct 142 from 179 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 5:
If we divide 370 by 71, we get 5 and a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 52.5
Subtracting 355 from 370 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 6:
The number 71 fits into 150 2 times, leaving a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 52.52
The remainder is 8 after subtracting 142 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
The number 71 fits into 80 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 52.521
Subtracting 71 from 80 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 8:
If we divide 90 by 71, we get 1 and a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 52.5211
Subtract 71 from 90 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.

Our division results in 52.5211 with a remaining 0.00019.