Let's divide 3203512 by 138
The aim is to understand the frequency of 138 in 3203512.

Going ahead to step 1:
If we divide 3 by 138, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Include the next digit (2) from the dividend after 3, then repeat: 32 / 138

Advancing to step 2:
When dividing 32 by 138, we get 0 with a remainder of 32.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 32 leaves us with 32.
Append the next digit (0) from the dividend to 32 and continue with: 320 / 138

Moving on to step 3:
The number 138 fits into 320 2 times, leaving a remainder of 44.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 276 away from 320, we end up with 44.
Grab the next digit (3) from the dividend, add it to 44, then carry on: 443 / 138

Moving on to step 4:
When dividing 443 by 138, we get 3 with a remainder of 29.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Subtract 414 from 443 to get 29.
Take the next digit (5) from the dividend and append it to 29, then repeat: 295 / 138

Step 5:
When dividing 295 by 138, we get 2 with a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 232.0
If we subtract 276 from 295, we get 19.
Grab the next digit (1) from the dividend, add it to 19, then carry on: 191 / 138

Moving on to step 6:
138 can be fit into 191 1 times, resulting in a remainder of 53.
Put 1 as the next digit of the answer. 
Result so far: 2321.0
The remainder is 53 after subtracting 138 from 191.
Bring next digit (2) of the dividend behind the 53 and repeat the process: 532 / 138

Advancing to step 7:
When dividing 532 by 138, we get 3 with a remainder of 118.
Record the quotient 3 as the next digit in the result. 
Result so far: 23213.0
Subtract 414 from 532 to 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.

Step 8:
The number 138 fits into 1180 8 times, leaving a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 23213.8
If we take 1104 away from 1180, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 9:
138 goes into 760 5 times with a remainder of 70.
Write down 5 as next digit of the result. 
Result so far: 23213.85
If we subtract 690 from 760, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 10:
The number 138 fits into 700 5 times, leaving a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 23213.855
Subtract 690 from 700 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 23213.855 with a remainder of 0.001.