We're dividing 854814 by 21 
We want to figure out the number of times 854814 can be divided by 21.

Going ahead to step 1:
If we divide 8 by 21, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 21

On to step 2:
The number 21 fits into 85 4 times, leaving a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 84 from 85 to get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 21

Advancing to step 3:
The number 21 fits into 14 0 times, leaving a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we subtract 0 from 14, we get 14.
Bring next digit (8) of the dividend behind the 14 and repeat the process: 148 / 21

Let's proceed to step 4:
The number 21 fits into 148 7 times, leaving a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 407.0
Deduct 147 from 148 and we're left with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 21

Let's proceed to step 5:
When dividing 11 by 21, we get 0 with a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 4070.0
The remainder is 11 after subtracting 0 from 11.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 21

Let's proceed to step 6:
The number 21 fits into 114 5 times, leaving a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 40705.0
Deduct 105 from 114 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
When dividing 90 by 21, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 40705.4
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
If we divide 60 by 21, we get 2 and a remainder of 18.
The next digit of our result is 2. 
Result so far: 40705.42
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 9:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 40705.428
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
When dividing 120 by 21, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 40705.4285
If we subtract 105 from 120, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 11:
21 goes into 150 7 times with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 40705.42857
If we subtract 147 from 150, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 12:
When dividing 30 by 21, we get 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 40705.428571
Subtract 21 from 30 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 13:
When dividing 90 by 21, we get 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 40705.4285714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 14:
The number 21 fits into 60 2 times, leaving a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 40705.42857142
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 40705.42857142 with a remaining 1.8e-08.