We're dividing 2883628 by 21 
We're looking to find how many times 21 goes into 2883628.

On to step 1:
21 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 21

On to step 2:
When dividing 28 by 21, we get 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 21 from 28, we get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 21

Moving on to step 3:
78 divided by 21 is 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we subtract 63 from 78, we get 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 21

Let's proceed to step 4:
The number 21 fits into 153 7 times, leaving a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 137.0
Subtracting 147 from 153 leaves us with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 21

Let's proceed to step 5:
When dividing 66 by 21, we get 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 1373.0
Subtract 63 from 66 to get 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 21

Step 6:
When dividing 32 by 21, we get 1 with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 13731.0
Deduct 21 from 32 and we're left with 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 21

Advancing to step 7:
21 can be fit into 118 5 times, resulting in a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 137315.0
Subtracting 105 from 118 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 8:
When dividing 130 by 21, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 137315.6
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.

Going ahead to step 9:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 137315.61
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.

Let's proceed to step 10:
190 divided by 21 is 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 137315.619
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.

Going ahead to step 11:
21 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 137315.619
If we subtract 0 from 10, we get 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 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: 137315.61904
Subtract 84 from 100 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 13:
160 divided by 21 is 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 137315.619047
Subtract 147 from 160 to 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.

Step 14:
If we divide 130 by 21, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 137315.6190476
If we take 126 away from 130, we end up 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 15:
40 divided by 21 is 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 137315.61904761
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.

The final outcome is 137315.61904761, with a leftover of 1.9e-08.