We look at the division of 50491937 by 138 
The aim is to understand the frequency of 138 in 50491937.

Moving on to step 1:
When dividing 5 by 138, we get 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (0) from the dividend to 5 and continue with: 50 / 138

Let's proceed to step 2:
50 divided by 138 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 50 and we're left with 50.
Include the next digit (4) from the dividend after 50, then repeat: 504 / 138

Step 3:
138 can be fit into 504 3 times, resulting in a remainder of 90.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 414 from 504 and we're left with 90.
Include the next digit (9) from the dividend after 90, then repeat: 909 / 138

Let's proceed to step 4:
When dividing 909 by 138, we get 6 with a remainder of 81.
Write down 6 as next digit of the result. 
Result so far: 36.0
Deduct 828 from 909 and we're left with 81.
Bring next digit (1) of the dividend behind the 81 and repeat the process: 811 / 138

Going ahead to step 5:
811 divided by 138 is 5 with a remainder of 121.
Put 5 as the next digit of the answer. 
Result so far: 365.0
The remainder is 121 after subtracting 690 from 811.
Bring next digit (9) of the dividend behind the 121 and repeat the process: 1219 / 138

Advancing to step 6:
1219 divided by 138 is 8 with a remainder of 115.
Write down 8 as next digit of the result. 
Result so far: 3658.0
If we subtract 1104 from 1219, we get 115.
Fetch the next digit (3) from the dividend, attach it to 115 and continue: 1153 / 138

On to step 7:
138 can be fit into 1153 8 times, resulting in a remainder of 49.
The number 8 becomes the next digit in our result. 
Result so far: 36588.0
Subtracting 1104 from 1153 leaves us with 49.
Fetch the next digit (7) from the dividend, attach it to 49 and continue: 497 / 138

Advancing to step 8:
138 can be fit into 497 3 times, resulting in a remainder of 83.
Record the quotient 3 as the next digit in the result. 
Result so far: 365883.0
If we subtract 414 from 497, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

On to step 9:
830 divided by 138 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 365883.6
If we subtract 828 from 830, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
If we divide 20 by 138, we get 0 and a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 365883.6
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
If we divide 200 by 138, we get 1 and a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 365883.601
The remainder is 62 after subtracting 138 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 12:
The number 138 fits into 620 4 times, leaving a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 365883.6014
The remainder is 68 after subtracting 552 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 13:
When dividing 680 by 138, we get 4 with a remainder of 128.
The number 4 becomes the next digit in our result. 
Result so far: 365883.60144
If we take 552 away from 680, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

After the division, we end up with 365883.60144 and a remainder of 0.000128.