We're dividing 19120890 by 138 
The aim is to understand the frequency of 138 in 19120890.

On to step 1:
138 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 138

Moving on to step 2:
If we divide 19 by 138, we get 0 and a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 138

Going ahead to step 3:
191 divided by 138 is 1 with a remainder of 53.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 138 from 191, we get 53.
Take the next digit (2) from the dividend and append it to 53, then repeat: 532 / 138

On to step 4:
When dividing 532 by 138, we get 3 with a remainder of 118.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 118 after subtracting 414 from 532.
Append the next digit (0) from the dividend to 118 and continue with: 1180 / 138

Step 5:
1180 divided by 138 is 8 with a remainder of 76.
The number 8 becomes the next digit in our result. 
Result so far: 138.0
Subtract 1104 from 1180 to get 76.
Grab the next digit (8) from the dividend, add it to 76, then carry on: 768 / 138

On to step 6:
768 divided by 138 is 5 with a remainder of 78.
The next digit of our result is 5. 
Result so far: 1385.0
If we subtract 690 from 768, we get 78.
Include the next digit (9) from the dividend after 78, then repeat: 789 / 138

Let's proceed to step 7:
The number 138 fits into 789 5 times, leaving a remainder of 99.
The number 5 becomes the next digit in our result. 
Result so far: 13855.0
The remainder is 99 after subtracting 690 from 789.
Bring next digit (0) of the dividend behind the 99 and repeat the process: 990 / 138

Step 8:
138 can be fit into 990 7 times, resulting in a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 138557.0
Subtracting 966 from 990 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
138 goes into 240 1 times with a remainder of 102.
Use 1 as the next digit of our solution. 
Result so far: 138557.1
The remainder is 102 after subtracting 138 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

On to step 10:
The number 138 fits into 1020 7 times, leaving a remainder of 54.
Write down 7 as next digit of the result. 
Result so far: 138557.17
If we subtract 966 from 1020, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 11:
If we divide 540 by 138, we get 3 and a remainder of 126.
Write down 3 as next digit of the result. 
Result so far: 138557.173
If we take 414 away from 540, we end up 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.

Advancing to step 12:
1260 divided by 138 is 9 with a remainder of 18.
The next digit of our result is 9. 
Result so far: 138557.1739
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.

Step 13:
138 goes into 180 1 times with a remainder of 42.
The next digit of our result is 1. 
Result so far: 138557.17391
If we subtract 138 from 180, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 14:
When dividing 420 by 138, we get 3 with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 138557.173913
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.

Advancing to step 15:
When dividing 60 by 138, we get 0 with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 138557.173913
If we subtract 0 from 60, we 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.

On to step 16:
The number 138 fits into 600 4 times, leaving a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 138557.17391304
If we take 552 away from 600, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 138557.17391304 and a remainder of 4.8e-08.