21545730 divided by 506 
Our goal is to divide 21545730 by 506.

On to step 1:
506 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 506

Moving on to step 2:
506 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Bring next digit (5) of the dividend behind the 21 and repeat the process: 215 / 506

Going ahead to step 3:
506 goes into 215 0 times with a remainder of 215.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 215, we end up with 215.
Include the next digit (4) from the dividend after 215, then repeat: 2154 / 506

On to step 4:
If we divide 2154 by 506, we get 4 and a remainder of 130.
The next digit of our result is 4. 
Result so far: 4.0
If we take 2024 away from 2154, we end up with 130.
Take the next digit (5) from the dividend and append it to 130, then repeat: 1305 / 506

On to step 5:
506 can be fit into 1305 2 times, resulting in a remainder of 293.
The next digit of our result is 2. 
Result so far: 42.0
Subtracting 1012 from 1305 leaves us with 293.
Fetch the next digit (7) from the dividend, attach it to 293 and continue: 2937 / 506

On to step 6:
If we divide 2937 by 506, we get 5 and a remainder of 407.
The next digit of our result is 5. 
Result so far: 425.0
If we subtract 2530 from 2937, we get 407.
Take the next digit (3) from the dividend and append it to 407, then repeat: 4073 / 506

On to step 7:
When dividing 4073 by 506, we get 8 with a remainder of 25.
Use 8 as the next digit of our solution. 
Result so far: 4258.0
Deduct 4048 from 4073 and we're left with 25.
Take the next digit (0) from the dividend and append it to 25, then repeat: 250 / 506

On to step 8:
The number 506 fits into 250 0 times, leaving a remainder of 250.
Write down 0 as next digit of the result. 
Result so far: 42580.0
The remainder is 250 after subtracting 0 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 9:
506 goes into 2500 4 times with a remainder of 476.
Write down 4 as next digit of the result. 
Result so far: 42580.4
Deduct 2024 from 2500 and we're left with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Advancing to step 10:
When dividing 4760 by 506, we get 9 with a remainder of 206.
Use 9 as the next digit of our solution. 
Result so far: 42580.49
If we take 4554 away from 4760, we end up with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 11:
If we divide 2060 by 506, we get 4 and a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 42580.494
Deduct 2024 from 2060 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 12:
506 can be fit into 360 0 times, resulting in a remainder of 360.
Record the quotient 0 as the next digit in the result. 
Result so far: 42580.494
If we take 0 away from 360, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 13:
506 goes into 3600 7 times with a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 42580.49407
If we subtract 3542 from 3600, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 14:
506 goes into 580 1 times with a remainder of 74.
The next digit of our result is 1. 
Result so far: 42580.494071
If we subtract 506 from 580, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 15:
506 can be fit into 740 1 times, resulting in a remainder of 234.
The number 1 becomes the next digit in our result. 
Result so far: 42580.4940711
If we take 506 away from 740, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

The final result is 42580.4940711 with a remainder of 2.34e-06.