We look at the division of 49800648 by 138 
The aim is to understand the frequency of 138 in 49800648.

Advancing to step 1:
138 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 138

Advancing to step 2:
The number 138 fits into 49 0 times, leaving a remainder of 49.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 49 after subtracting 0 from 49.
Take the next digit (8) from the dividend and append it to 49, then repeat: 498 / 138

Advancing to step 3:
138 goes into 498 3 times with a remainder of 84.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 414 away from 498, we end up with 84.
Append the next digit (0) from the dividend to 84 and continue with: 840 / 138

Going ahead to step 4:
The number 138 fits into 840 6 times, leaving a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
The remainder is 12 after subtracting 828 from 840.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 138

Step 5:
138 can be fit into 120 0 times, resulting in a remainder of 120.
Record the quotient 0 as the next digit in the result. 
Result so far: 360.0
The remainder is 120 after subtracting 0 from 120.
Append the next digit (6) from the dividend to 120 and continue with: 1206 / 138

Going ahead to step 6:
If we divide 1206 by 138, we get 8 and a remainder of 102.
The number 8 becomes the next digit in our result. 
Result so far: 3608.0
If we subtract 1104 from 1206, we get 102.
Bring next digit (4) of the dividend behind the 102 and repeat the process: 1024 / 138

Step 7:
1024 divided by 138 is 7 with a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 36087.0
The remainder is 58 after subtracting 966 from 1024.
Take the next digit (8) from the dividend and append it to 58, then repeat: 588 / 138

Advancing to step 8:
When dividing 588 by 138, we get 4 with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 360874.0
If we subtract 552 from 588, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
360 divided by 138 is 2 with a remainder of 84.
The number 2 becomes the next digit in our result. 
Result so far: 360874.2
If we subtract 276 from 360, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 10:
When dividing 840 by 138, we get 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 360874.26
If we subtract 828 from 840, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 11:
138 can be fit into 120 0 times, resulting in a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 360874.26
The remainder is 120 after subtracting 0 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 12:
If we divide 1200 by 138, we get 8 and a remainder of 96.
Use 8 as the next digit of our solution. 
Result so far: 360874.2608
Deduct 1104 from 1200 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 13:
138 can be fit into 960 6 times, resulting in a remainder of 132.
Record the quotient 6 as the next digit in the result. 
Result so far: 360874.26086
If we subtract 828 from 960, we get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Advancing to step 14:
The number 138 fits into 1320 9 times, leaving a remainder of 78.
The number 9 becomes the next digit in our result. 
Result so far: 360874.260869
Subtracting 1242 from 1320 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 15:
When dividing 780 by 138, we get 5 with a remainder of 90.
Write down 5 as next digit of the result. 
Result so far: 360874.2608695
If we subtract 690 from 780, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 16:
When dividing 900 by 138, we get 6 with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 360874.26086956
If we subtract 828 from 900, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The quotient of the division is 360874.26086956, and the remainder is 7.2e-08.