397719 ÷ 71 
The aim is to understand the frequency of 71 in 397719.

On to step 1:
The number 71 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 71

Advancing to step 2:
71 goes into 39 0 times with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 71

On to step 3:
The number 71 fits into 397 5 times, leaving a remainder of 42.
The next digit of our result is 5. 
Result so far: 5.0
If we take 355 away from 397, we end up with 42.
Grab the next digit (7) from the dividend, add it to 42, then carry on: 427 / 71

On to step 4:
71 can be fit into 427 6 times, resulting in a remainder of 1.
Record the quotient 6 as the next digit in the result. 
Result so far: 56.0
Deduct 426 from 427 and we're left with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 71

Advancing to step 5:
71 can be fit into 11 0 times, resulting in a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 560.0
If we take 0 away from 11, we end up with 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 71

Going ahead to step 6:
71 goes into 119 1 times with a remainder of 48.
The next digit of our result is 1. 
Result so far: 5601.0
Subtract 71 from 119 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 7:
When dividing 480 by 71, we get 6 with a remainder of 54.
Record the quotient 6 as the next digit in the result. 
Result so far: 5601.6
The remainder is 54 after subtracting 426 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 8:
The number 71 fits into 540 7 times, leaving a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 5601.67
Subtracting 497 from 540 leaves us 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.

On to step 9:
If we divide 430 by 71, we get 6 and a remainder of 4.
The next digit of our result is 6. 
Result so far: 5601.676
If we take 426 away from 430, we end up 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.

Let's proceed to step 10:
40 divided by 71 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 5601.676
If we subtract 0 from 40, we 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.

Step 11:
71 can be fit into 400 5 times, resulting in a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 5601.67605
If we subtract 355 from 400, we 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.

Step 12:
The number 71 fits into 450 6 times, leaving a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 5601.676056
Deduct 426 from 450 and we're left 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.

Moving on to step 13:
The number 71 fits into 240 3 times, leaving a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 5601.6760563
Subtracting 213 from 240 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 14:
The number 71 fits into 270 3 times, leaving a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 5601.67605633
If we subtract 213 from 270, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

The final outcome is 5601.67605633, with a leftover of 5.7e-08.