We're dividing 21786493 by 457 
We want to divide 21786493 by 457.

Advancing to step 1:
When dividing 2 by 457, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 457

Advancing to step 2:
457 goes into 21 0 times with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (7) from the dividend after 21, then repeat: 217 / 457

Advancing to step 3:
457 can be fit into 217 0 times, resulting in a remainder of 217.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 217 leaves us with 217.
Take the next digit (8) from the dividend and append it to 217, then repeat: 2178 / 457

Advancing to step 4:
If we divide 2178 by 457, we get 4 and a remainder of 350.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 1828 from 2178, we get 350.
Include the next digit (6) from the dividend after 350, then repeat: 3506 / 457

Going ahead to step 5:
The number 457 fits into 3506 7 times, leaving a remainder of 307.
Write down 7 as next digit of the result. 
Result so far: 47.0
Subtract 3199 from 3506 to get 307.
Fetch the next digit (4) from the dividend, attach it to 307 and continue: 3074 / 457

On to step 6:
457 goes into 3074 6 times with a remainder of 332.
The next digit of our result is 6. 
Result so far: 476.0
The remainder is 332 after subtracting 2742 from 3074.
Grab the next digit (9) from the dividend, add it to 332, then carry on: 3329 / 457

Let's proceed to step 7:
457 can be fit into 3329 7 times, resulting in a remainder of 130.
Write down 7 as next digit of the result. 
Result so far: 4767.0
If we take 3199 away from 3329, we end up with 130.
Grab the next digit (3) from the dividend, add it to 130, then carry on: 1303 / 457

Advancing to step 8:
457 can be fit into 1303 2 times, resulting in a remainder of 389.
Write down 2 as next digit of the result. 
Result so far: 47672.0
The remainder is 389 after subtracting 914 from 1303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Going ahead to step 9:
457 can be fit into 3890 8 times, resulting in a remainder of 234.
Use 8 as the next digit of our solution. 
Result so far: 47672.8
Subtract 3656 from 3890 to get 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Let's proceed to step 10:
457 can be fit into 2340 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 47672.85
The remainder is 55 after subtracting 2285 from 2340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 11:
457 can be fit into 550 1 times, resulting in a remainder of 93.
The next digit of our result is 1. 
Result so far: 47672.851
Subtracting 457 from 550 leaves us with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Let's proceed to step 12:
457 goes into 930 2 times with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 47672.8512
Subtracting 914 from 930 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 13:
The number 457 fits into 160 0 times, leaving a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 47672.8512
Subtract 0 from 160 to get 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 14:
The number 457 fits into 1600 3 times, leaving a remainder of 229.
The number 3 becomes the next digit in our result. 
Result so far: 47672.851203
Deduct 1371 from 1600 and we're left with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

On to step 15:
2290 divided by 457 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 47672.8512035
Deduct 2285 from 2290 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 16:
457 goes into 50 0 times with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 47672.8512035
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 47672.8512035 and a remainder of 5e-08.