We look at the division of 233447 by 71 
The aim is to understand the frequency of 71 in 233447.

On to step 1:
If we divide 2 by 71, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 71

Going ahead to step 2:
23 divided by 71 is 0 with a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 23, we get 23.
Append the next digit (3) from the dividend to 23 and continue with: 233 / 71

Going ahead to step 3:
233 divided by 71 is 3 with a remainder of 20.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 213 from 233 leaves us with 20.
Append the next digit (4) from the dividend to 20 and continue with: 204 / 71

Step 4:
If we divide 204 by 71, we get 2 and a remainder of 62.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Deduct 142 from 204 and we're left with 62.
Take the next digit (4) from the dividend and append it to 62, then repeat: 624 / 71

Let's proceed to step 5:
71 can be fit into 624 8 times, resulting in a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 328.0
If we subtract 568 from 624, we get 56.
Include the next digit (7) from the dividend after 56, then repeat: 567 / 71

Let's proceed to step 6:
When dividing 567 by 71, we get 7 with a remainder of 70.
The next digit of our result is 7. 
Result so far: 3287.0
If we take 497 away from 567, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 7:
71 can be fit into 700 9 times, resulting in a remainder of 61.
The number 9 becomes the next digit in our result. 
Result so far: 3287.9
The remainder is 61 after subtracting 639 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 8:
When dividing 610 by 71, we get 8 with a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 3287.98
Deduct 568 from 610 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 9:
71 can be fit into 420 5 times, resulting in a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 3287.985
Subtracting 355 from 420 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 10:
If we divide 650 by 71, we get 9 and a remainder of 11.
The next digit of our result is 9. 
Result so far: 3287.9859
Deduct 639 from 650 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 11:
If we divide 110 by 71, we get 1 and a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 3287.98591
If we take 71 away from 110, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 12:
When dividing 390 by 71, we get 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 3287.985915
If we subtract 355 from 390, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 13:
71 can be fit into 350 4 times, resulting in a remainder of 66.
Put 4 as the next digit of the answer. 
Result so far: 3287.9859154
If we take 284 away from 350, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 14:
71 can be fit into 660 9 times, resulting in a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 3287.98591549
Subtracting 639 from 660 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final outcome is 3287.98591549, with a leftover of 2.1e-08.