4860381 divided by 405 
The aim is to understand the frequency of 405 in 4860381.

Step 1:
If we divide 4 by 405, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 405

Advancing to step 2:
405 can be fit into 48 0 times, resulting in a remainder of 48.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 48 to get 48.
Include the next digit (6) from the dividend after 48, then repeat: 486 / 405

On to step 3:
When dividing 486 by 405, we get 1 with a remainder of 81.
The next digit of our result is 1. 
Result so far: 1.0
If we take 405 away from 486, we end up with 81.
Grab the next digit (0) from the dividend, add it to 81, then carry on: 810 / 405

Step 4:
The number 405 fits into 810 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtract 810 from 810 to get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 405

Going ahead to step 5:
The number 405 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 405

Going ahead to step 6:
405 goes into 38 0 times with a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 1200.0
Deduct 0 from 38 and we're left with 38.
Append the next digit (1) from the dividend to 38 and continue with: 381 / 405

Let's proceed to step 7:
If we divide 381 by 405, we get 0 and a remainder of 381.
Put 0 as the next digit of the answer. 
Result so far: 12000.0
Subtract 0 from 381 to get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Step 8:
3810 divided by 405 is 9 with a remainder of 165.
Use 9 as the next digit of our solution. 
Result so far: 12000.9
Deduct 3645 from 3810 and we're left with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Advancing to step 9:
405 can be fit into 1650 4 times, resulting in a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 12000.94
If we take 1620 away from 1650, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
405 goes into 300 0 times with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 12000.94
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 11:
The number 405 fits into 3000 7 times, leaving a remainder of 165.
Record the quotient 7 as the next digit in the result. 
Result so far: 12000.9407
The remainder is 165 after subtracting 2835 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Step 12:
405 can be fit into 1650 4 times, resulting in a remainder of 30.
The next digit of our result is 4. 
Result so far: 12000.94074
The remainder is 30 after subtracting 1620 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 13:
405 can be fit into 300 0 times, resulting in a remainder of 300.
Write down 0 as next digit of the result. 
Result so far: 12000.94074
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 14:
The number 405 fits into 3000 7 times, leaving a remainder of 165.
Put 7 as the next digit of the answer. 
Result so far: 12000.9407407
Deduct 2835 from 3000 and we're left with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 15:
The number 405 fits into 1650 4 times, leaving a remainder of 30.
Put 4 as the next digit of the answer. 
Result so far: 12000.94074074
Subtract 1620 from 1650 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 12000.94074074, with a leftover of 3e-08.