We look at the division of 508687 by 71 
The aim is to understand the frequency of 71 in 508687.

Moving on to step 1:
The number 71 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 71

Step 2:
71 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 50, we get 50.
Append the next digit (8) from the dividend to 50 and continue with: 508 / 71

Going ahead to step 3:
71 can be fit into 508 7 times, resulting in a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 497 from 508 to get 11.
Grab the next digit (6) from the dividend, add it to 11, then carry on: 116 / 71

Going ahead to step 4:
71 can be fit into 116 1 times, resulting in a remainder of 45.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
If we subtract 71 from 116, we get 45.
Append the next digit (8) from the dividend to 45 and continue with: 458 / 71

Going ahead to step 5:
71 goes into 458 6 times with a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 716.0
Subtract 426 from 458 to get 32.
Bring next digit (7) of the dividend behind the 32 and repeat the process: 327 / 71

On to step 6:
The number 71 fits into 327 4 times, leaving a remainder of 43.
Write down 4 as next digit of the result. 
Result so far: 7164.0
Deduct 284 from 327 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Advancing to step 7:
71 can be fit into 430 6 times, resulting in a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 7164.6
Subtracting 426 from 430 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
40 divided by 71 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 7164.6
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
71 goes into 400 5 times with a remainder of 45.
The next digit of our result is 5. 
Result so far: 7164.605
Subtract 355 from 400 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 10:
The number 71 fits into 450 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 7164.6056
Subtracting 426 from 450 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
If we divide 240 by 71, we get 3 and a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 7164.60563
If we subtract 213 from 240, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
71 goes into 270 3 times with a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 7164.605633
Deduct 213 from 270 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

After the division, we end up with 7164.605633 and a remainder of 5.7e-06.