30261250 ÷ 638 
We want to divide 30261250 by 638.

Going ahead to step 1:
When dividing 3 by 638, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 638

On to step 2:
The number 638 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Take the next digit (2) from the dividend and append it to 30, then repeat: 302 / 638

Step 3:
When dividing 302 by 638, we get 0 with a remainder of 302.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 302, we get 302.
Bring next digit (6) of the dividend behind the 302 and repeat the process: 3026 / 638

Moving on to step 4:
If we divide 3026 by 638, we get 4 and a remainder of 474.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 2552 from 3026, we get 474.
Grab the next digit (1) from the dividend, add it to 474, then carry on: 4741 / 638

Advancing to step 5:
638 goes into 4741 7 times with a remainder of 275.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Deduct 4466 from 4741 and we're left with 275.
Take the next digit (2) from the dividend and append it to 275, then repeat: 2752 / 638

Let's proceed to step 6:
When dividing 2752 by 638, we get 4 with a remainder of 200.
Use 4 as the next digit of our solution. 
Result so far: 474.0
Subtracting 2552 from 2752 leaves us with 200.
Include the next digit (5) from the dividend after 200, then repeat: 2005 / 638

Step 7:
When dividing 2005 by 638, we get 3 with a remainder of 91.
Put 3 as the next digit of the answer. 
Result so far: 4743.0
Subtract 1914 from 2005 to get 91.
Include the next digit (0) from the dividend after 91, then repeat: 910 / 638

On to step 8:
The number 638 fits into 910 1 times, leaving a remainder of 272.
Record the quotient 1 as the next digit in the result. 
Result so far: 47431.0
If we take 638 away from 910, we end up with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Step 9:
638 goes into 2720 4 times with a remainder of 168.
The next digit of our result is 4. 
Result so far: 47431.4
The remainder is 168 after subtracting 2552 from 2720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 10:
When dividing 1680 by 638, we get 2 with a remainder of 404.
Write down 2 as next digit of the result. 
Result so far: 47431.42
Subtract 1276 from 1680 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Let's proceed to step 11:
If we divide 4040 by 638, we get 6 and a remainder of 212.
Record the quotient 6 as the next digit in the result. 
Result so far: 47431.426
If we take 3828 away from 4040, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Step 12:
When dividing 2120 by 638, we get 3 with a remainder of 206.
Use 3 as the next digit of our solution. 
Result so far: 47431.4263
Deduct 1914 from 2120 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Going ahead to step 13:
The number 638 fits into 2060 3 times, leaving a remainder of 146.
Use 3 as the next digit of our solution. 
Result so far: 47431.42633
Deduct 1914 from 2060 and we're left with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Our division results in 47431.42633 with a remaining 0.000146.