We're dividing 18405183 by 403 
The aim is to understand the frequency of 403 in 18405183.

Moving on to step 1:
If we divide 1 by 403, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 403

Step 2:
403 can be fit into 18 0 times, resulting in a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 403

On to step 3:
403 goes into 184 0 times with a remainder of 184.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 184 after subtracting 0 from 184.
Grab the next digit (0) from the dividend, add it to 184, then carry on: 1840 / 403

Moving on to step 4:
403 goes into 1840 4 times with a remainder of 228.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 228 after subtracting 1612 from 1840.
Include the next digit (5) from the dividend after 228, then repeat: 2285 / 403

On to step 5:
403 can be fit into 2285 5 times, resulting in a remainder of 270.
Use 5 as the next digit of our solution. 
Result so far: 45.0
If we subtract 2015 from 2285, we get 270.
Append the next digit (1) from the dividend to 270 and continue with: 2701 / 403

Let's proceed to step 6:
The number 403 fits into 2701 6 times, leaving a remainder of 283.
The next digit of our result is 6. 
Result so far: 456.0
Subtracting 2418 from 2701 leaves us with 283.
Grab the next digit (8) from the dividend, add it to 283, then carry on: 2838 / 403

Moving on to step 7:
If we divide 2838 by 403, we get 7 and a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 4567.0
Deduct 2821 from 2838 and we're left with 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 403

On to step 8:
173 divided by 403 is 0 with a remainder of 173.
Put 0 as the next digit of the answer. 
Result so far: 45670.0
If we take 0 away from 173, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Moving on to step 9:
403 can be fit into 1730 4 times, resulting in a remainder of 118.
The next digit of our result is 4. 
Result so far: 45670.4
If we subtract 1612 from 1730, we 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.

On to step 10:
If we divide 1180 by 403, we get 2 and a remainder of 374.
Record the quotient 2 as the next digit in the result. 
Result so far: 45670.42
If we subtract 806 from 1180, we get 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Moving on to step 11:
The number 403 fits into 3740 9 times, leaving a remainder of 113.
Use 9 as the next digit of our solution. 
Result so far: 45670.429
Subtracting 3627 from 3740 leaves us with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Let's proceed to step 12:
When dividing 1130 by 403, we get 2 with a remainder of 324.
Write down 2 as next digit of the result. 
Result so far: 45670.4292
If we take 806 away from 1130, we end up with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Moving on to step 13:
If we divide 3240 by 403, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 45670.42928
The remainder is 16 after subtracting 3224 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 14:
When dividing 160 by 403, we get 0 with a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 45670.42928
The remainder is 160 after subtracting 0 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 15:
403 can be fit into 1600 3 times, resulting in a remainder of 391.
The next digit of our result is 3. 
Result so far: 45670.4292803
Subtracting 1209 from 1600 leaves us with 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

On to step 16:
If we divide 3910 by 403, we get 9 and a remainder of 283.
The next digit of our result is 9. 
Result so far: 45670.42928039
If we subtract 3627 from 3910, we get 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

Our division results in 45670.42928039 with a remaining 2.83e-07.