We divide 68729644 by 451
Let's see how many times 451 fits into 68729644.

Moving on to step 1:
If we divide 6 by 451, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 451

Going ahead to step 2:
68 divided by 451 is 0 with a remainder of 68.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 68 and we're left with 68.
Bring next digit (7) of the dividend behind the 68 and repeat the process: 687 / 451

Moving on to step 3:
If we divide 687 by 451, we get 1 and a remainder of 236.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 451 from 687 and we're left with 236.
Include the next digit (2) from the dividend after 236, then repeat: 2362 / 451

Step 4:
The number 451 fits into 2362 5 times, leaving a remainder of 107.
The next digit of our result is 5. 
Result so far: 15.0
Deduct 2255 from 2362 and we're left with 107.
Fetch the next digit (9) from the dividend, attach it to 107 and continue: 1079 / 451

Going ahead to step 5:
451 goes into 1079 2 times with a remainder of 177.
The next digit of our result is 2. 
Result so far: 152.0
Subtract 902 from 1079 to get 177.
Append the next digit (6) from the dividend to 177 and continue with: 1776 / 451

On to step 6:
If we divide 1776 by 451, we get 3 and a remainder of 423.
The next digit of our result is 3. 
Result so far: 1523.0
The remainder is 423 after subtracting 1353 from 1776.
Grab the next digit (4) from the dividend, add it to 423, then carry on: 4234 / 451

Let's proceed to step 7:
When dividing 4234 by 451, we get 9 with a remainder of 175.
The number 9 becomes the next digit in our result. 
Result so far: 15239.0
If we take 4059 away from 4234, we end up with 175.
Take the next digit (4) from the dividend and append it to 175, then repeat: 1754 / 451

Advancing to step 8:
When dividing 1754 by 451, we get 3 with a remainder of 401.
The number 3 becomes the next digit in our result. 
Result so far: 152393.0
Deduct 1353 from 1754 and we're left with 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Let's proceed to step 9:
If we divide 4010 by 451, we get 8 and a remainder of 402.
Record the quotient 8 as the next digit in the result. 
Result so far: 152393.8
Subtracting 3608 from 4010 leaves us with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Step 10:
451 goes into 4020 8 times with a remainder of 412.
The next digit of our result is 8. 
Result so far: 152393.88
Subtracting 3608 from 4020 leaves us with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

After the division, we end up with 152393.88 and a remainder of 0.412.