We're dividing 21481624 by 405 
We want to divide 21481624 by 405.

On to step 1:
2 divided by 405 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 405

Moving on to step 2:
When dividing 21 by 405, we get 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 405

Advancing to step 3:
If we divide 214 by 405, we get 0 and a remainder of 214.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 214 and we're left with 214.
Include the next digit (8) from the dividend after 214, then repeat: 2148 / 405

Step 4:
The number 405 fits into 2148 5 times, leaving a remainder of 123.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 123 after subtracting 2025 from 2148.
Take the next digit (1) from the dividend and append it to 123, then repeat: 1231 / 405

Advancing to step 5:
The number 405 fits into 1231 3 times, leaving a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 53.0
Deduct 1215 from 1231 and we're left with 16.
Append the next digit (6) from the dividend to 16 and continue with: 166 / 405

Step 6:
405 goes into 166 0 times with a remainder of 166.
Use 0 as the next digit of our solution. 
Result so far: 530.0
Subtracting 0 from 166 leaves us with 166.
Take the next digit (2) from the dividend and append it to 166, then repeat: 1662 / 405

Let's proceed to step 7:
1662 divided by 405 is 4 with a remainder of 42.
The number 4 becomes the next digit in our result. 
Result so far: 5304.0
Subtract 1620 from 1662 to get 42.
Fetch the next digit (4) from the dividend, attach it to 42 and continue: 424 / 405

On to step 8:
424 divided by 405 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 53041.0
Subtract 405 from 424 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 9:
405 can be fit into 190 0 times, resulting in a remainder of 190.
Write down 0 as next digit of the result. 
Result so far: 53041.0
If we take 0 away from 190, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 10:
When dividing 1900 by 405, we get 4 with a remainder of 280.
Record the quotient 4 as the next digit in the result. 
Result so far: 53041.04
Subtracting 1620 from 1900 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 11:
If we divide 2800 by 405, we get 6 and a remainder of 370.
Put 6 as the next digit of the answer. 
Result so far: 53041.046
If we subtract 2430 from 2800, we get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Moving on to step 12:
The number 405 fits into 3700 9 times, leaving a remainder of 55.
Use 9 as the next digit of our solution. 
Result so far: 53041.0469
If we take 3645 away from 3700, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 13:
405 can be fit into 550 1 times, resulting in a remainder of 145.
Write down 1 as next digit of the result. 
Result so far: 53041.04691
If we take 405 away from 550, we end up with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 14:
The number 405 fits into 1450 3 times, leaving a remainder of 235.
Put 3 as the next digit of the answer. 
Result so far: 53041.046913
Subtract 1215 from 1450 to get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Moving on to step 15:
The number 405 fits into 2350 5 times, leaving a remainder of 325.
Use 5 as the next digit of our solution. 
Result so far: 53041.0469135
Subtract 2025 from 2350 to get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Let's proceed to step 16:
405 goes into 3250 8 times with a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 53041.04691358
Subtract 3240 from 3250 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.

Our division results in 53041.04691358 with a remaining 1e-08.