We're dividing 21255946 by 708 
Our goal is to divide 21255946 by 708.

Advancing to step 1:
708 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
Deduct 0 from 2 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 708

Advancing to step 2:
When dividing 21 by 708, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 708

Moving on to step 3:
If we divide 212 by 708, we get 0 and a remainder of 212.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 212 to get 212.
Fetch the next digit (5) from the dividend, attach it to 212 and continue: 2125 / 708

On to step 4:
When dividing 2125 by 708, we get 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 2124 from 2125 and we're left with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 708

On to step 5:
15 divided by 708 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Subtracting 0 from 15 leaves us with 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 708

Going ahead to step 6:
708 can be fit into 159 0 times, resulting in a remainder of 159.
Put 0 as the next digit of the answer. 
Result so far: 300.0
The remainder is 159 after subtracting 0 from 159.
Append the next digit (4) from the dividend to 159 and continue with: 1594 / 708

Advancing to step 7:
1594 divided by 708 is 2 with a remainder of 178.
Write down 2 as next digit of the result. 
Result so far: 3002.0
If we take 1416 away from 1594, we end up with 178.
Bring next digit (6) of the dividend behind the 178 and repeat the process: 1786 / 708

Advancing to step 8:
708 goes into 1786 2 times with a remainder of 370.
Put 2 as the next digit of the answer. 
Result so far: 30022.0
Deduct 1416 from 1786 and we're left with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Advancing to step 9:
708 goes into 3700 5 times with a remainder of 160.
Write down 5 as next digit of the result. 
Result so far: 30022.5
If we take 3540 away from 3700, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 10:
1600 divided by 708 is 2 with a remainder of 184.
Put 2 as the next digit of the answer. 
Result so far: 30022.52
Subtracting 1416 from 1600 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 11:
If we divide 1840 by 708, we get 2 and a remainder of 424.
Use 2 as the next digit of our solution. 
Result so far: 30022.522
Deduct 1416 from 1840 and we're left with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

The final result is 30022.522 with a remainder of 0.0424.