We look at the division of 68514569 by 138 
The aim is to understand the frequency of 138 in 68514569.

On to step 1:
138 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 138

On to step 2:
The number 138 fits into 68 0 times, leaving a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 68 to get 68.
Append the next digit (5) from the dividend to 68 and continue with: 685 / 138

Advancing to step 3:
If we divide 685 by 138, we get 4 and a remainder of 133.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 552 from 685 leaves us with 133.
Take the next digit (1) from the dividend and append it to 133, then repeat: 1331 / 138

On to step 4:
When dividing 1331 by 138, we get 9 with a remainder of 89.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
Subtracting 1242 from 1331 leaves us with 89.
Fetch the next digit (4) from the dividend, attach it to 89 and continue: 894 / 138

Let's proceed to step 5:
894 divided by 138 is 6 with a remainder of 66.
Put 6 as the next digit of the answer. 
Result so far: 496.0
The remainder is 66 after subtracting 828 from 894.
Bring next digit (5) of the dividend behind the 66 and repeat the process: 665 / 138

Going ahead to step 6:
If we divide 665 by 138, we get 4 and a remainder of 113.
Use 4 as the next digit of our solution. 
Result so far: 4964.0
Deduct 552 from 665 and we're left with 113.
Take the next digit (6) from the dividend and append it to 113, then repeat: 1136 / 138

Going ahead to step 7:
1136 divided by 138 is 8 with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 49648.0
If we subtract 1104 from 1136, we get 32.
Append the next digit (9) from the dividend to 32 and continue with: 329 / 138

Let's proceed to step 8:
138 can be fit into 329 2 times, resulting in a remainder of 53.
Use 2 as the next digit of our solution. 
Result so far: 496482.0
Deduct 276 from 329 and we're left 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.

Moving on to step 9:
530 divided by 138 is 3 with a remainder of 116.
Write down 3 as next digit of the result. 
Result so far: 496482.3
If we take 414 away from 530, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 10:
If we divide 1160 by 138, we get 8 and a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 496482.38
Subtract 1104 from 1160 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 11:
If we divide 560 by 138, we get 4 and a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 496482.384
Subtract 552 from 560 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
The number 138 fits into 80 0 times, leaving a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 496482.384
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 13:
The number 138 fits into 800 5 times, leaving a remainder of 110.
Write down 5 as next digit of the result. 
Result so far: 496482.38405
Deduct 690 from 800 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 14:
When dividing 1100 by 138, we get 7 with a remainder of 134.
Write down 7 as next digit of the result. 
Result so far: 496482.384057
The remainder is 134 after subtracting 966 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Moving on to step 15:
138 can be fit into 1340 9 times, resulting in a remainder of 98.
Record the quotient 9 as the next digit in the result. 
Result so far: 496482.3840579
The remainder is 98 after subtracting 1242 from 1340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Let's proceed to step 16:
138 goes into 980 7 times with a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 496482.38405797
Deduct 966 from 980 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Our division results in 496482.38405797 with a remaining 1.4e-08.