Let's divide 5753606 by 21
Our goal is to divide 5753606 by 21.

Going ahead to step 1:
If we divide 5 by 21, we get 0 and a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 21

Step 2:
21 goes into 57 2 times with a remainder of 15.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 42 from 57 and we're left with 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 21

On to step 3:
The number 21 fits into 155 7 times, leaving a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 27.0
Subtract 147 from 155 to get 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 21

Going ahead to step 4:
When dividing 83 by 21, we get 3 with a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 273.0
The remainder is 20 after subtracting 63 from 83.
Bring next digit (6) of the dividend behind the 20 and repeat the process: 206 / 21

Advancing to step 5:
When dividing 206 by 21, we get 9 with a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 2739.0
Subtract 189 from 206 to get 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 21

Advancing to step 6:
170 divided by 21 is 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 27398.0
If we take 168 away from 170, we end up with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 21

Step 7:
If we divide 26 by 21, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 273981.0
If we subtract 21 from 26, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
50 divided by 21 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 273981.2
Deduct 42 from 50 and we're left 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.

Going ahead to step 9:
When dividing 80 by 21, we get 3 with a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 273981.23
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 10:
If we divide 170 by 21, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 273981.238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 11:
When dividing 20 by 21, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 273981.238
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.

Going ahead to step 12:
21 goes into 200 9 times with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 273981.23809
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.

On to step 13:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 273981.238095
Deduct 105 from 110 and we're left 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.

Advancing to step 14:
21 can be fit into 50 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 273981.2380952
Subtract 42 from 50 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 15:
When dividing 80 by 21, we get 3 with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 273981.23809523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Our division results in 273981.23809523 with a remaining 1.7e-08.