We divide 871520 by 71
The aim is to understand the frequency of 71 in 871520.

Step 1:
If we divide 8 by 71, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 71

On to step 2:
If we divide 87 by 71, we get 1 and a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 71 from 87, we get 16.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 71

Going ahead to step 3:
If we divide 161 by 71, we get 2 and a remainder of 19.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 142 from 161 leaves us with 19.
Include the next digit (5) from the dividend after 19, then repeat: 195 / 71

On to step 4:
71 goes into 195 2 times with a remainder of 53.
Write down 2 as next digit of the result. 
Result so far: 122.0
Subtract 142 from 195 to get 53.
Bring next digit (2) of the dividend behind the 53 and repeat the process: 532 / 71

Advancing to step 5:
71 can be fit into 532 7 times, resulting in a remainder of 35.
The next digit of our result is 7. 
Result so far: 1227.0
Subtracting 497 from 532 leaves us with 35.
Grab the next digit (0) from the dividend, add it to 35, then carry on: 350 / 71

Going ahead to step 6:
If we divide 350 by 71, we get 4 and a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 12274.0
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.

Step 7:
71 can be fit into 660 9 times, resulting in a remainder of 21.
The next digit of our result is 9. 
Result so far: 12274.9
Subtract 639 from 660 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
The number 71 fits into 210 2 times, leaving a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 12274.92
If we take 142 away from 210, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 9:
When dividing 680 by 71, we get 9 with a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 12274.929
Subtracting 639 from 680 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 10:
71 can be fit into 410 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 12274.9295
If we take 355 away from 410, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

On to step 11:
71 goes into 550 7 times with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 12274.92957
Subtract 497 from 550 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 12:
530 divided by 71 is 7 with a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 12274.929577
The remainder is 33 after subtracting 497 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final result is 12274.929577 with a remainder of 3.3e-06.