We look at the division of 20421330 by 743 
We want to figure out the number of times 20421330 can be divided by 743.

Advancing to step 1:
If we divide 2 by 743, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 743

Advancing to step 2:
When dividing 20 by 743, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Include the next digit (4) from the dividend after 20, then repeat: 204 / 743

Moving on to step 3:
If we divide 204 by 743, we get 0 and a remainder of 204.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 204 after subtracting 0 from 204.
Fetch the next digit (2) from the dividend, attach it to 204 and continue: 2042 / 743

Moving on to step 4:
743 can be fit into 2042 2 times, resulting in a remainder of 556.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1486 from 2042 to get 556.
Take the next digit (1) from the dividend and append it to 556, then repeat: 5561 / 743

Advancing to step 5:
If we divide 5561 by 743, we get 7 and a remainder of 360.
The number 7 becomes the next digit in our result. 
Result so far: 27.0
Deduct 5201 from 5561 and we're left with 360.
Take the next digit (3) from the dividend and append it to 360, then repeat: 3603 / 743

Advancing to step 6:
If we divide 3603 by 743, we get 4 and a remainder of 631.
The next digit of our result is 4. 
Result so far: 274.0
Deduct 2972 from 3603 and we're left with 631.
Take the next digit (3) from the dividend and append it to 631, then repeat: 6313 / 743

Going ahead to step 7:
6313 divided by 743 is 8 with a remainder of 369.
Put 8 as the next digit of the answer. 
Result so far: 2748.0
Deduct 5944 from 6313 and we're left with 369.
Bring next digit (0) of the dividend behind the 369 and repeat the process: 3690 / 743

Advancing to step 8:
3690 divided by 743 is 4 with a remainder of 718.
The next digit of our result is 4. 
Result so far: 27484.0
Subtracting 2972 from 3690 leaves us with 718.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7180, and continue the process.

Let's proceed to step 9:
If we divide 7180 by 743, we get 9 and a remainder of 493.
Put 9 as the next digit of the answer. 
Result so far: 27484.9
Subtract 6687 from 7180 to get 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

Let's proceed to step 10:
The number 743 fits into 4930 6 times, leaving a remainder of 472.
The number 6 becomes the next digit in our result. 
Result so far: 27484.96
If we take 4458 away from 4930, we end up with 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

On to step 11:
When dividing 4720 by 743, we get 6 with a remainder of 262.
Put 6 as the next digit of the answer. 
Result so far: 27484.966
Deduct 4458 from 4720 and we're left with 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

The final result is 27484.966 with a remainder of 0.0262.