1749393 divided by 412 
The aim is to understand the frequency of 412 in 1749393.

On to step 1:
1 divided by 412 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 412

Advancing to step 2:
When dividing 17 by 412, we get 0 with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 412

Step 3:
When dividing 174 by 412, we get 0 with a remainder of 174.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 174 to get 174.
Fetch the next digit (9) from the dividend, attach it to 174 and continue: 1749 / 412

Moving on to step 4:
When dividing 1749 by 412, we get 4 with a remainder of 101.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 1648 from 1749 leaves us with 101.
Fetch the next digit (3) from the dividend, attach it to 101 and continue: 1013 / 412

Going ahead to step 5:
The number 412 fits into 1013 2 times, leaving a remainder of 189.
Use 2 as the next digit of our solution. 
Result so far: 42.0
If we take 824 away from 1013, we end up with 189.
Include the next digit (9) from the dividend after 189, then repeat: 1899 / 412

Advancing to step 6:
412 can be fit into 1899 4 times, resulting in a remainder of 251.
Record the quotient 4 as the next digit in the result. 
Result so far: 424.0
Subtract 1648 from 1899 to get 251.
Append the next digit (3) from the dividend to 251 and continue with: 2513 / 412

On to step 7:
When dividing 2513 by 412, we get 6 with a remainder of 41.
Put 6 as the next digit of the answer. 
Result so far: 4246.0
The remainder is 41 after subtracting 2472 from 2513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 8:
412 goes into 410 0 times with a remainder of 410.
Record the quotient 0 as the next digit in the result. 
Result so far: 4246.0
Subtracting 0 from 410 leaves us with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Let's proceed to step 9:
412 goes into 4100 9 times with a remainder of 392.
Put 9 as the next digit of the answer. 
Result so far: 4246.09
Deduct 3708 from 4100 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 10:
3920 divided by 412 is 9 with a remainder of 212.
Write down 9 as next digit of the result. 
Result so far: 4246.099
If we take 3708 away from 3920, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Our division results in 4246.099 with a remaining 0.0212.