We divide 601592 by 21
We want to figure out the number of times 601592 can be divided by 21.

Step 1:
The number 21 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 21

Advancing to step 2:
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: 2.0
If we subtract 42 from 60, we get 18.
Fetch the next digit (1) from the dividend, attach it to 18 and continue: 181 / 21

Moving on to step 3:
21 goes into 181 8 times with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Deduct 168 from 181 and we're left with 13.
Bring next digit (5) of the dividend behind the 13 and repeat the process: 135 / 21

Let's proceed to step 4:
21 goes into 135 6 times with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 286.0
Subtracting 126 from 135 leaves us with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 21

Step 5:
21 can be fit into 99 4 times, resulting in a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 2864.0
Deduct 84 from 99 and we're left with 15.
Append the next digit (2) from the dividend to 15 and continue with: 152 / 21

Going ahead to step 6:
The number 21 fits into 152 7 times, leaving a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 28647.0
If we take 147 away from 152, we end up 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.

Let's proceed to step 7:
When dividing 50 by 21, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 28647.2
Subtracting 42 from 50 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
When dividing 80 by 21, we get 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 28647.23
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 9:
21 goes into 170 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 28647.238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
20 divided by 21 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 28647.238
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
When dividing 200 by 21, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 28647.23809
Subtracting 189 from 200 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 12:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 28647.238095
If we take 105 away from 110, we end up 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.

Step 13:
If we divide 50 by 21, we get 2 and a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 28647.2380952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 14:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 28647.23809523
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Our division results in 28647.23809523 with a remaining 1.7e-08.