We look at the division of 721138 by 25 
Let's see how many times 25 fits into 721138.

Advancing to step 1:
The number 25 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 25

Moving on to step 2:
If we divide 72 by 25, we get 2 and a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 50 away from 72, we end up with 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 25

Going ahead to step 3:
The number 25 fits into 221 8 times, leaving a remainder of 21.
The next digit of our result is 8. 
Result so far: 28.0
Subtract 200 from 221 to get 21.
Bring next digit (1) of the dividend behind the 21 and repeat the process: 211 / 25

Advancing to step 4:
The number 25 fits into 211 8 times, leaving a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 288.0
Subtract 200 from 211 to get 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 25

Going ahead to step 5:
113 divided by 25 is 4 with a remainder of 13.
Record the quotient 4 as the next digit in the result. 
Result so far: 2884.0
If we subtract 100 from 113, we get 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 25

Let's proceed to step 6:
When dividing 138 by 25, we get 5 with a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 28845.0
If we subtract 125 from 138, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
The number 25 fits into 130 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 28845.5
The remainder is 5 after subtracting 125 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
50 divided by 25 is 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 28845.52
If we subtract 50 from 50, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 28845.52
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
0 divided by 25 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 28845.52
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 28845.52 with a remainder of 0.0.