Let's divide 71859522 by 138
The aim is to understand the frequency of 138 in 71859522.

On to step 1:
7 divided by 138 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 138

Step 2:
The number 138 fits into 71 0 times, leaving a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Grab the next digit (8) from the dividend, add it to 71, then carry on: 718 / 138

Advancing to step 3:
138 goes into 718 5 times with a remainder of 28.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 690 from 718 to get 28.
Include the next digit (5) from the dividend after 28, then repeat: 285 / 138

Going ahead to step 4:
285 divided by 138 is 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
The remainder is 9 after subtracting 276 from 285.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 138

Going ahead to step 5:
The number 138 fits into 99 0 times, leaving a remainder of 99.
The next digit of our result is 0. 
Result so far: 520.0
The remainder is 99 after subtracting 0 from 99.
Bring next digit (5) of the dividend behind the 99 and repeat the process: 995 / 138

Step 6:
The number 138 fits into 995 7 times, leaving a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 5207.0
Subtract 966 from 995 to get 29.
Fetch the next digit (2) from the dividend, attach it to 29 and continue: 292 / 138

Moving on to step 7:
138 goes into 292 2 times with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 52072.0
Subtracting 276 from 292 leaves us with 16.
Include the next digit (2) from the dividend after 16, then repeat: 162 / 138

On to step 8:
162 divided by 138 is 1 with a remainder of 24.
The next digit of our result is 1. 
Result so far: 520721.0
Subtract 138 from 162 to get 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 9:
The number 138 fits into 240 1 times, leaving a remainder of 102.
The number 1 becomes the next digit in our result. 
Result so far: 520721.1
Subtract 138 from 240 to get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Moving on to step 10:
If we divide 1020 by 138, we get 7 and a remainder of 54.
Record the quotient 7 as the next digit in the result. 
Result so far: 520721.17
Subtracting 966 from 1020 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 11:
138 goes into 540 3 times with a remainder of 126.
The number 3 becomes the next digit in our result. 
Result so far: 520721.173
Subtracting 414 from 540 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

On to step 12:
1260 divided by 138 is 9 with a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 520721.1739
Subtracting 1242 from 1260 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 13:
138 can be fit into 180 1 times, resulting in a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 520721.17391
Subtracting 138 from 180 leaves us 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.

Moving on to step 14:
When dividing 420 by 138, we get 3 with a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 520721.173913
Subtract 414 from 420 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 15:
When dividing 60 by 138, we get 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 520721.173913
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 16:
138 goes into 600 4 times with a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 520721.17391304
The remainder is 48 after subtracting 552 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 520721.17391304, with a leftover of 4.8e-08.