Let's divide 99816451 by 638
We want to divide 99816451 by 638.

Let's proceed to step 1:
If we divide 9 by 638, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 638

Going ahead to step 2:
99 divided by 638 is 0 with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Grab the next digit (8) from the dividend, add it to 99, then carry on: 998 / 638

Advancing to step 3:
If we divide 998 by 638, we get 1 and a remainder of 360.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 638 away from 998, we end up with 360.
Include the next digit (1) from the dividend after 360, then repeat: 3601 / 638

Step 4:
The number 638 fits into 3601 5 times, leaving a remainder of 411.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 3190 from 3601, we get 411.
Include the next digit (6) from the dividend after 411, then repeat: 4116 / 638

Step 5:
4116 divided by 638 is 6 with a remainder of 288.
Put 6 as the next digit of the answer. 
Result so far: 156.0
The remainder is 288 after subtracting 3828 from 4116.
Grab the next digit (4) from the dividend, add it to 288, then carry on: 2884 / 638

On to step 6:
638 goes into 2884 4 times with a remainder of 332.
Record the quotient 4 as the next digit in the result. 
Result so far: 1564.0
Deduct 2552 from 2884 and we're left with 332.
Take the next digit (5) from the dividend and append it to 332, then repeat: 3325 / 638

Going ahead to step 7:
3325 divided by 638 is 5 with a remainder of 135.
Write down 5 as next digit of the result. 
Result so far: 15645.0
Subtract 3190 from 3325 to get 135.
Grab the next digit (1) from the dividend, add it to 135, then carry on: 1351 / 638

Step 8:
When dividing 1351 by 638, we get 2 with a remainder of 75.
Write down 2 as next digit of the result. 
Result so far: 156452.0
Subtracting 1276 from 1351 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 9:
When dividing 750 by 638, we get 1 with a remainder of 112.
Record the quotient 1 as the next digit in the result. 
Result so far: 156452.1
If we subtract 638 from 750, we get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 10:
The number 638 fits into 1120 1 times, leaving a remainder of 482.
Use 1 as the next digit of our solution. 
Result so far: 156452.11
The remainder is 482 after subtracting 638 from 1120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

After the division, we end up with 156452.11 and a remainder of 0.482.