We look at the division of 397691 by 71 
The aim is to understand the frequency of 71 in 397691.

Advancing to step 1:
3 divided by 71 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 71

Let's proceed to step 2:
39 divided by 71 is 0 with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Bring next digit (7) of the dividend behind the 39 and repeat the process: 397 / 71

Moving on to step 3:
71 goes into 397 5 times with a remainder of 42.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we subtract 355 from 397, we get 42.
Fetch the next digit (6) from the dividend, attach it to 42 and continue: 426 / 71

On to step 4:
426 divided by 71 is 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 56.0
If we subtract 426 from 426, we get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 71

Advancing to step 5:
When dividing 9 by 71, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 560.0
If we subtract 0 from 9, we get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 71

Step 6:
If we divide 91 by 71, we get 1 and a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 5601.0
Deduct 71 from 91 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
When dividing 200 by 71, we get 2 with a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 5601.2
If we take 142 away from 200, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 8:
71 goes into 580 8 times with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 5601.28
If we take 568 away from 580, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
71 can be fit into 120 1 times, resulting in a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 5601.281
If we subtract 71 from 120, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 10:
71 can be fit into 490 6 times, resulting in a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 5601.2816
The remainder is 64 after subtracting 426 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Step 11:
The number 71 fits into 640 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 5601.28169
The remainder is 1 after subtracting 639 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 12:
The number 71 fits into 10 0 times, leaving a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 5601.28169
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 13:
The number 71 fits into 100 1 times, leaving a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 5601.2816901
If we take 71 away from 100, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 14:
290 divided by 71 is 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 5601.28169014
Deduct 284 from 290 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 5601.28169014, with a leftover of 6e-09.