We look at the division of 946960 by 21 
We want to figure out the number of times 946960 can be divided by 21.

Let's proceed to step 1:
When dividing 9 by 21, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (4) of the dividend behind the 9 and repeat the process: 94 / 21

Let's proceed to step 2:
The number 21 fits into 94 4 times, leaving a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 84 away from 94, we end up with 10.
Fetch the next digit (6) from the dividend, attach it to 10 and continue: 106 / 21

On to step 3:
When dividing 106 by 21, we get 5 with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 45.0
The remainder is 1 after subtracting 105 from 106.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 21

Let's proceed to step 4:
If we divide 19 by 21, we get 0 and a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 450.0
Deduct 0 from 19 and we're left with 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 21

Going ahead to step 5:
196 divided by 21 is 9 with a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 4509.0
Deduct 189 from 196 and we're left with 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 21

Going ahead to step 6:
70 divided by 21 is 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 45093.0
If we subtract 63 from 70, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
21 goes into 70 3 times with a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 45093.3
Subtracting 63 from 70 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 8:
If we divide 70 by 21, we get 3 and a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 45093.33
If we take 63 away from 70, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The quotient of the division is 45093.33, and the remainder is 0.007.