We divide 958420 by 21
We want to figure out the number of times 958420 can be divided by 21.

Let's proceed to step 1:
If we divide 9 by 21, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (5) of the dividend behind the 9 and repeat the process: 95 / 21

On to step 2:
When dividing 95 by 21, we get 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 84 from 95 and we're left with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 21

On to step 3:
The number 21 fits into 118 5 times, leaving a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 45.0
Subtracting 105 from 118 leaves us with 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 21

Going ahead to step 4:
When dividing 134 by 21, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 456.0
The remainder is 8 after subtracting 126 from 134.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 21

Advancing to step 5:
The number 21 fits into 82 3 times, leaving a remainder of 19.
Put 3 as the next digit of the answer. 
Result so far: 4563.0
Deduct 63 from 82 and we're left with 19.
Take the next digit (0) from the dividend and append it to 19, then repeat: 190 / 21

Step 6:
21 goes into 190 9 times with a remainder of 1.
The next digit of our result is 9. 
Result so far: 45639.0
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.

Let's proceed to step 7:
21 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 45639.0
If we take 0 away from 10, we end up 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.

Going ahead to step 8:
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: 45639.04
Deduct 84 from 100 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.

Let's proceed to step 9:
21 can be fit into 160 7 times, resulting in a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 45639.047
The remainder is 13 after subtracting 147 from 160.
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 10:
21 can be fit into 130 6 times, resulting in a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 45639.0476
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.

On to step 11:
40 divided by 21 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 45639.04761
Deduct 21 from 40 and we're left 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 12:
190 divided by 21 is 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 45639.047619
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.

Step 13:
10 divided by 21 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 45639.047619
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.

Moving on to step 14:
21 goes into 100 4 times with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 45639.04761904
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.

The final outcome is 45639.04761904, with a leftover of 1.6e-08.