We're dividing 964546 by 21 
We're looking to find how many times 21 goes into 964546.

Step 1:
21 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 21

Step 2:
If we divide 96 by 21, we get 4 and a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtracting 84 from 96 leaves us with 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 21

Step 3:
When dividing 124 by 21, we get 5 with a remainder of 19.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we take 105 away from 124, we end up with 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 21

Step 4:
21 goes into 195 9 times with a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 459.0
If we take 189 away from 195, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 21

Step 5:
64 divided by 21 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 4593.0
If we subtract 63 from 64, we get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 21

On to step 6:
16 divided by 21 is 0 with a remainder of 16.
The next digit of our result is 0. 
Result so far: 45930.0
Deduct 0 from 16 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
If we divide 160 by 21, we get 7 and a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 45930.7
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.

Advancing to step 8:
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: 45930.76
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.

Advancing to step 9:
21 goes into 40 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 45930.761
Subtract 21 from 40 to 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.

Advancing to step 10:
21 goes into 190 9 times with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 45930.7619
Subtract 189 from 190 to 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.

On to step 11:
21 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 45930.7619
Subtracting 0 from 10 leaves us 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.

Step 12:
The number 21 fits into 100 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 45930.761904
The remainder is 16 after subtracting 84 from 100.
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 can be fit into 160 7 times, resulting in a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 45930.7619047
If we subtract 147 from 160, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 14:
130 divided by 21 is 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 45930.76190476
Subtracting 126 from 130 leaves us 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.

After the division, we end up with 45930.76190476 and a remainder of 4e-09.