We're dividing 899998 by 21 
We want to figure out the number of times 899998 can be divided by 21.

Advancing to step 1:
The number 21 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 21

On to step 2:
The number 21 fits into 89 4 times, leaving a remainder of 5.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 84 away from 89, we end up with 5.
Bring next digit (9) of the dividend behind the 5 and repeat the process: 59 / 21

Advancing to step 3:
When dividing 59 by 21, we get 2 with a remainder of 17.
Use 2 as the next digit of our solution. 
Result so far: 42.0
Subtract 42 from 59 to get 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 21

Let's proceed to step 4:
The number 21 fits into 179 8 times, leaving a remainder of 11.
The next digit of our result is 8. 
Result so far: 428.0
The remainder is 11 after subtracting 168 from 179.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 21

Advancing to step 5:
The number 21 fits into 119 5 times, leaving a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 4285.0
The remainder is 14 after subtracting 105 from 119.
Include the next digit (8) from the dividend after 14, then repeat: 148 / 21

On to step 6:
21 can be fit into 148 7 times, resulting in a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 42857.0
The remainder is 1 after subtracting 147 from 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
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: 42857.0
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 8:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 42857.04
If we take 84 away from 100, we end up 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.

Going ahead to step 9:
160 divided by 21 is 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 42857.047
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.

Moving on to step 10:
130 divided by 21 is 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 42857.0476
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.

Advancing to step 11:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 42857.04761
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 12:
190 divided by 21 is 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 42857.047619
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.

Advancing to step 13:
If we divide 10 by 21, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 42857.047619
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.

Let's proceed to step 14:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 42857.04761904
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.

The final outcome is 42857.04761904, with a leftover of 1.6e-08.