Let's divide 13201811 by 405
The aim is to understand the frequency of 405 in 13201811.

Step 1:
If we divide 1 by 405, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 405

Let's proceed to step 2:
405 goes into 13 0 times with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 405

Advancing to step 3:
The number 405 fits into 132 0 times, leaving a remainder of 132.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 132, we get 132.
Include the next digit (0) from the dividend after 132, then repeat: 1320 / 405

Step 4:
405 goes into 1320 3 times with a remainder of 105.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 1215 from 1320 to get 105.
Grab the next digit (1) from the dividend, add it to 105, then carry on: 1051 / 405

Moving on to step 5:
405 goes into 1051 2 times with a remainder of 241.
Write down 2 as next digit of the result. 
Result so far: 32.0
If we subtract 810 from 1051, we get 241.
Include the next digit (8) from the dividend after 241, then repeat: 2418 / 405

On to step 6:
405 goes into 2418 5 times with a remainder of 393.
Put 5 as the next digit of the answer. 
Result so far: 325.0
Subtracting 2025 from 2418 leaves us with 393.
Bring next digit (1) of the dividend behind the 393 and repeat the process: 3931 / 405

Let's proceed to step 7:
405 can be fit into 3931 9 times, resulting in a remainder of 286.
Put 9 as the next digit of the answer. 
Result so far: 3259.0
Subtracting 3645 from 3931 leaves us with 286.
Take the next digit (1) from the dividend and append it to 286, then repeat: 2861 / 405

On to step 8:
405 goes into 2861 7 times with a remainder of 26.
Write down 7 as next digit of the result. 
Result so far: 32597.0
If we subtract 2835 from 2861, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 9:
405 goes into 260 0 times with a remainder of 260.
Record the quotient 0 as the next digit in the result. 
Result so far: 32597.0
If we take 0 away from 260, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

On to step 10:
The number 405 fits into 2600 6 times, leaving a remainder of 170.
The next digit of our result is 6. 
Result so far: 32597.06
Deduct 2430 from 2600 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 11:
The number 405 fits into 1700 4 times, leaving a remainder of 80.
Write down 4 as next digit of the result. 
Result so far: 32597.064
If we subtract 1620 from 1700, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
800 divided by 405 is 1 with a remainder of 395.
Use 1 as the next digit of our solution. 
Result so far: 32597.0641
If we subtract 405 from 800, we get 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

Moving on to step 13:
When dividing 3950 by 405, we get 9 with a remainder of 305.
Write down 9 as next digit of the result. 
Result so far: 32597.06419
Deduct 3645 from 3950 and we're left with 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

On to step 14:
405 can be fit into 3050 7 times, resulting in a remainder of 215.
Write down 7 as next digit of the result. 
Result so far: 32597.064197
Subtracting 2835 from 3050 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 15:
405 can be fit into 2150 5 times, resulting in a remainder of 125.
The next digit of our result is 5. 
Result so far: 32597.0641975
The remainder is 125 after subtracting 2025 from 2150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 16:
If we divide 1250 by 405, we get 3 and a remainder of 35.
Record the quotient 3 as the next digit in the result. 
Result so far: 32597.06419753
Subtract 1215 from 1250 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 32597.06419753 and a remainder of 3.5e-08.