We look at the division of 838673 by 71 
The aim is to understand the frequency of 71 in 838673.

Moving on to step 1:
71 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 71

Advancing to step 2:
When dividing 83 by 71, we get 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 71 from 83 and we're left with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 71

Step 3:
When dividing 128 by 71, we get 1 with a remainder of 57.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 71 from 128 to get 57.
Take the next digit (6) from the dividend and append it to 57, then repeat: 576 / 71

Let's proceed to step 4:
576 divided by 71 is 8 with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 118.0
Deduct 568 from 576 and we're left with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 71

Step 5:
87 divided by 71 is 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1181.0
Subtracting 71 from 87 leaves us with 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 71

Advancing to step 6:
When dividing 163 by 71, we get 2 with a remainder of 21.
The number 2 becomes the next digit in our result. 
Result so far: 11812.0
Subtract 142 from 163 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 7:
210 divided by 71 is 2 with a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 11812.2
Subtracting 142 from 210 leaves us 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.

Let's proceed to step 8:
71 can be fit into 680 9 times, resulting in a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 11812.29
The remainder is 41 after subtracting 639 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 9:
410 divided by 71 is 5 with a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 11812.295
If we subtract 355 from 410, we get 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 10:
If we divide 550 by 71, we get 7 and a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 11812.2957
If we take 497 away from 550, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 11:
When dividing 530 by 71, we get 7 with a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 11812.29577
If we subtract 497 from 530, we get 33.
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 outcome is 11812.29577, with a leftover of 3.3e-05.