We look at the division of 27293138 by 21 
We're looking to find how many times 21 goes into 27293138.

Moving on to step 1:
If we divide 2 by 21, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (7) from the dividend to 2 and continue with: 27 / 21

On to step 2:
21 can be fit into 27 1 times, resulting in a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 21 from 27 to get 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 21

Step 3:
21 goes into 62 2 times with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Deduct 42 from 62 and we're left with 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 21

Let's proceed to step 4:
When dividing 209 by 21, we get 9 with a remainder of 20.
The next digit of our result is 9. 
Result so far: 129.0
If we take 189 away from 209, we end up with 20.
Take the next digit (3) from the dividend and append it to 20, then repeat: 203 / 21

Step 5:
The number 21 fits into 203 9 times, leaving a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 1299.0
Subtracting 189 from 203 leaves us with 14.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 21

On to step 6:
If we divide 141 by 21, we get 6 and a remainder of 15.
The number 6 becomes the next digit in our result. 
Result so far: 12996.0
Subtracting 126 from 141 leaves us with 15.
Bring next digit (3) of the dividend behind the 15 and repeat the process: 153 / 21

Going ahead to step 7:
153 divided by 21 is 7 with a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 129967.0
Subtract 147 from 153 to get 6.
Append the next digit (8) from the dividend to 6 and continue with: 68 / 21

On to step 8:
21 can be fit into 68 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 1299673.0
If we take 63 away from 68, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
The number 21 fits into 50 2 times, leaving a remainder of 8.
The next digit of our result is 2. 
Result so far: 1299673.2
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 1299673.23
If we take 63 away from 80, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
The number 21 fits into 170 8 times, leaving a remainder of 2.
The next digit of our result is 8. 
Result so far: 1299673.238
If we take 168 away from 170, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
If we divide 20 by 21, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 1299673.238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 13:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 1299673.23809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 14:
21 goes into 110 5 times with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 1299673.238095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 15:
21 goes into 50 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 1299673.2380952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 16:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 1299673.23809523
Subtracting 63 from 80 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final outcome is 1299673.23809523, with a leftover of 1.7e-08.