601851 divided by 21 
Our goal is to divide 601851 by 21.

Let's proceed to step 1:
If we divide 6 by 21, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 21

Advancing to step 2:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 42 from 60 and we're left with 18.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 21

Let's proceed to step 3:
181 divided by 21 is 8 with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtract 168 from 181 to get 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 21

Moving on to step 4:
138 divided by 21 is 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 286.0
If we take 126 away from 138, we end up with 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 21

Advancing to step 5:
If we divide 125 by 21, we get 5 and a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 2865.0
Subtracting 105 from 125 leaves us with 20.
Fetch the next digit (1) from the dividend, attach it to 20 and continue: 201 / 21

Moving on to step 6:
21 can be fit into 201 9 times, resulting in a remainder of 12.
Put 9 as the next digit of the answer. 
Result so far: 28659.0
The remainder is 12 after subtracting 189 from 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
21 goes into 120 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 28659.5
The remainder is 15 after subtracting 105 from 120.
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 8:
21 goes into 150 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 28659.57
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.

Moving on to step 9:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 28659.571
If we take 21 away from 30, we end up 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.

Going ahead to step 10:
If we divide 90 by 21, we get 4 and a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 28659.5714
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.

Going ahead to step 11:
21 goes into 60 2 times with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 28659.57142
If we subtract 42 from 60, we 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.

Going ahead to step 12:
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: 28659.571428
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 13:
21 can be fit into 120 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 28659.5714285
Subtracting 105 from 120 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 14:
21 goes into 150 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 28659.57142857
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.

Our division results in 28659.57142857 with a remaining 3e-09.