We look at the division of 837541 by 21 
We're looking to find how many times 21 goes into 837541.

Step 1:
The number 21 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 21

Going ahead to step 2:
21 can be fit into 83 3 times, resulting in a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 63 away from 83, we end up with 20.
Include the next digit (7) from the dividend after 20, then repeat: 207 / 21

Let's proceed to step 3:
21 can be fit into 207 9 times, resulting in a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 39.0
If we take 189 away from 207, we end up with 18.
Bring next digit (5) of the dividend behind the 18 and repeat the process: 185 / 21

Step 4:
21 goes into 185 8 times with a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 398.0
Subtracting 168 from 185 leaves us with 17.
Take the next digit (4) from the dividend and append it to 17, then repeat: 174 / 21

Step 5:
When dividing 174 by 21, we get 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 3988.0
If we take 168 away from 174, we end up with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 21

Advancing to step 6:
21 goes into 61 2 times with a remainder of 19.
Put 2 as the next digit of the answer. 
Result so far: 39882.0
If we subtract 42 from 61, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 7:
190 divided by 21 is 9 with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 39882.9
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 8:
If we divide 10 by 21, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 39882.9
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
If we divide 100 by 21, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 39882.904
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 10:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 39882.9047
Deduct 147 from 160 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 11:
21 goes into 130 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 39882.90476
If we subtract 126 from 130, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 12:
21 goes into 40 1 times with a remainder of 19.
The next digit of our result is 1. 
Result so far: 39882.904761
If we take 21 away from 40, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 13:
21 goes into 190 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 39882.9047619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 14:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 39882.9047619
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 39882.9047619 with a remaining 1e-08.