We're dividing 20736277 by 21 
We want to figure out the number of times 20736277 can be divided by 21.

Let's proceed to step 1:
The number 21 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 21

Let's proceed to step 2:
21 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Append the next digit (7) from the dividend to 20 and continue with: 207 / 21

Let's proceed to step 3:
The number 21 fits into 207 9 times, leaving a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 189 from 207 to get 18.
Include the next digit (3) from the dividend after 18, then repeat: 183 / 21

Advancing to step 4:
The number 21 fits into 183 8 times, leaving a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 98.0
Subtract 168 from 183 to get 15.
Fetch the next digit (6) from the dividend, attach it to 15 and continue: 156 / 21

Let's proceed to step 5:
21 can be fit into 156 7 times, resulting in a remainder of 9.
The next digit of our result is 7. 
Result so far: 987.0
The remainder is 9 after subtracting 147 from 156.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 21

Let's proceed to step 6:
92 divided by 21 is 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 9874.0
Subtract 84 from 92 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 21

Let's proceed to step 7:
87 divided by 21 is 4 with a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 98744.0
The remainder is 3 after subtracting 84 from 87.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 21

Let's proceed to step 8:
The number 21 fits into 37 1 times, leaving a remainder of 16.
The next digit of our result is 1. 
Result so far: 987441.0
If we subtract 21 from 37, 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.

Going ahead to step 9:
When dividing 160 by 21, we get 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 987441.7
Deduct 147 from 160 and we're left 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:
If we divide 130 by 21, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 987441.76
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:
If we divide 40 by 21, we get 1 and a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 987441.761
If we subtract 21 from 40, we 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.

Advancing to step 12:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 987441.7619
If we subtract 189 from 190, we 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.

Step 13:
21 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 987441.7619
Subtracting 0 from 10 leaves us 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:
21 can be fit into 100 4 times, resulting in a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 987441.761904
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.

Going ahead to step 15:
If we divide 160 by 21, we get 7 and a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 987441.7619047
Subtracting 147 from 160 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.

Moving on to step 16:
21 goes into 130 6 times with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 987441.76190476
Subtract 126 from 130 to 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.

The final outcome is 987441.76190476, with a leftover of 4e-09.