961942 divided by 21 
Our goal is to divide 961942 by 21.

Advancing to step 1:
If we divide 9 by 21, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 21

Step 2:
If we divide 96 by 21, we get 4 and a remainder of 12.
The next digit of our result is 4. 
Result so far: 4.0
If we take 84 away from 96, we end up with 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 21

Going ahead to step 3:
21 can be fit into 121 5 times, resulting in a remainder of 16.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
The remainder is 16 after subtracting 105 from 121.
Bring next digit (9) of the dividend behind the 16 and repeat the process: 169 / 21

Moving on to step 4:
21 can be fit into 169 8 times, resulting in a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 458.0
The remainder is 1 after subtracting 168 from 169.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 21

Moving on to step 5:
When dividing 14 by 21, we get 0 with a remainder of 14.
The next digit of our result is 0. 
Result so far: 4580.0
Subtract 0 from 14 to get 14.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 21

Step 6:
If we divide 142 by 21, we get 6 and a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 45806.0
Subtract 126 from 142 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.

Advancing to step 7:
21 can be fit into 160 7 times, resulting in a remainder of 13.
The next digit of our result is 7. 
Result so far: 45806.7
If we take 147 away from 160, we end up 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 8:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 45806.76
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
40 divided by 21 is 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 45806.761
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.

Step 10:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 45806.7619
If we subtract 189 from 190, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 11:
21 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 45806.7619
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 12:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 45806.761904
If we subtract 84 from 100, we 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.

Let's proceed to step 13:
21 goes into 160 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 45806.7619047
Subtracting 147 from 160 leaves us 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.

On to step 14:
21 can be fit into 130 6 times, resulting in a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 45806.76190476
Subtract 126 from 130 to 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.

Our division results in 45806.76190476 with a remaining 4e-09.