68172151 ÷ 636 
Let's see how many times 636 fits into 68172151.

On to step 1:
If we divide 6 by 636, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 636

Going ahead to step 2:
68 divided by 636 is 0 with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Include the next digit (1) from the dividend after 68, then repeat: 681 / 636

Step 3:
636 can be fit into 681 1 times, resulting in a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 636 from 681 leaves us with 45.
Bring next digit (7) of the dividend behind the 45 and repeat the process: 457 / 636

On to step 4:
636 goes into 457 0 times with a remainder of 457.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 457 to get 457.
Include the next digit (2) from the dividend after 457, then repeat: 4572 / 636

Step 5:
When dividing 4572 by 636, we get 7 with a remainder of 120.
The number 7 becomes the next digit in our result. 
Result so far: 107.0
If we subtract 4452 from 4572, we get 120.
Fetch the next digit (1) from the dividend, attach it to 120 and continue: 1201 / 636

On to step 6:
When dividing 1201 by 636, we get 1 with a remainder of 565.
Record the quotient 1 as the next digit in the result. 
Result so far: 1071.0
If we take 636 away from 1201, we end up with 565.
Append the next digit (5) from the dividend to 565 and continue with: 5655 / 636

Step 7:
636 goes into 5655 8 times with a remainder of 567.
The number 8 becomes the next digit in our result. 
Result so far: 10718.0
Subtracting 5088 from 5655 leaves us with 567.
Bring next digit (1) of the dividend behind the 567 and repeat the process: 5671 / 636

Step 8:
5671 divided by 636 is 8 with a remainder of 583.
Put 8 as the next digit of the answer. 
Result so far: 107188.0
Deduct 5088 from 5671 and we're left with 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Moving on to step 9:
The number 636 fits into 5830 9 times, leaving a remainder of 106.
Record the quotient 9 as the next digit in the result. 
Result so far: 107188.9
Subtracting 5724 from 5830 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 10:
636 can be fit into 1060 1 times, resulting in a remainder of 424.
The number 1 becomes the next digit in our result. 
Result so far: 107188.91
If we subtract 636 from 1060, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Let's proceed to step 11:
636 can be fit into 4240 6 times, resulting in a remainder of 424.
Use 6 as the next digit of our solution. 
Result so far: 107188.916
Deduct 3816 from 4240 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.

Let's proceed to step 12:
If we divide 4240 by 636, we get 6 and a remainder of 424.
The next digit of our result is 6. 
Result so far: 107188.9166
If we subtract 3816 from 4240, we get 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

After the division, we end up with 107188.9166 and a remainder of 0.00424.