Let's divide 86809534 by 138
The aim is to understand the frequency of 138 in 86809534.

On to step 1:
138 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 138

Going ahead to step 2:
When dividing 86 by 138, we get 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Bring next digit (8) of the dividend behind the 86 and repeat the process: 868 / 138

Moving on to step 3:
If we divide 868 by 138, we get 6 and a remainder of 40.
The next digit of our result is 6. 
Result so far: 6.0
If we take 828 away from 868, we end up with 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 138

Let's proceed to step 4:
When dividing 400 by 138, we get 2 with a remainder of 124.
Write down 2 as next digit of the result. 
Result so far: 62.0
Subtracting 276 from 400 leaves us with 124.
Fetch the next digit (9) from the dividend, attach it to 124 and continue: 1249 / 138

Advancing to step 5:
If we divide 1249 by 138, we get 9 and a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 629.0
If we take 1242 away from 1249, we end up with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 138

Going ahead to step 6:
138 can be fit into 75 0 times, resulting in a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 6290.0
Subtracting 0 from 75 leaves us with 75.
Include the next digit (3) from the dividend after 75, then repeat: 753 / 138

Going ahead to step 7:
When dividing 753 by 138, we get 5 with a remainder of 63.
Record the quotient 5 as the next digit in the result. 
Result so far: 62905.0
The remainder is 63 after subtracting 690 from 753.
Fetch the next digit (4) from the dividend, attach it to 63 and continue: 634 / 138

On to step 8:
If we divide 634 by 138, we get 4 and a remainder of 82.
Write down 4 as next digit of the result. 
Result so far: 629054.0
The remainder is 82 after subtracting 552 from 634.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 9:
If we divide 820 by 138, we get 5 and a remainder of 130.
The next digit of our result is 5. 
Result so far: 629054.5
If we take 690 away from 820, we end up with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Advancing to step 10:
138 goes into 1300 9 times with a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 629054.59
Subtracting 1242 from 1300 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 11:
The number 138 fits into 580 4 times, leaving a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 629054.594
Subtract 552 from 580 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 12:
When dividing 280 by 138, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 629054.5942
Deduct 276 from 280 and we're left 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 13:
When dividing 40 by 138, we get 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 629054.5942
Subtracting 0 from 40 leaves us with 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 14:
The number 138 fits into 400 2 times, leaving a remainder of 124.
The next digit of our result is 2. 
Result so far: 629054.594202
Subtract 276 from 400 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Going ahead to step 15:
138 can be fit into 1240 8 times, resulting in a remainder of 136.
Record the quotient 8 as the next digit in the result. 
Result so far: 629054.5942028
The remainder is 136 after subtracting 1104 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

On to step 16:
1360 divided by 138 is 9 with a remainder of 118.
Record the quotient 9 as the next digit in the result. 
Result so far: 629054.59420289
If we subtract 1242 from 1360, we get 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

The final result is 629054.59420289 with a remainder of 1.18e-07.