43343129 divided by 451 
Our goal is to divide 43343129 by 451.

On to step 1:
4 divided by 451 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 451

Advancing to step 2:
451 can be fit into 43 0 times, resulting in a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Grab the next digit (3) from the dividend, add it to 43, then carry on: 433 / 451

On to step 3:
When dividing 433 by 451, we get 0 with a remainder of 433.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 433 and we're left with 433.
Grab the next digit (4) from the dividend, add it to 433, then carry on: 4334 / 451

Step 4:
When dividing 4334 by 451, we get 9 with a remainder of 275.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 4059 from 4334 and we're left with 275.
Bring next digit (3) of the dividend behind the 275 and repeat the process: 2753 / 451

Let's proceed to step 5:
451 goes into 2753 6 times with a remainder of 47.
The next digit of our result is 6. 
Result so far: 96.0
The remainder is 47 after subtracting 2706 from 2753.
Fetch the next digit (1) from the dividend, attach it to 47 and continue: 471 / 451

Step 6:
451 can be fit into 471 1 times, resulting in a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 961.0
Subtracting 451 from 471 leaves us with 20.
Append the next digit (2) from the dividend to 20 and continue with: 202 / 451

Going ahead to step 7:
If we divide 202 by 451, we get 0 and a remainder of 202.
Use 0 as the next digit of our solution. 
Result so far: 9610.0
The remainder is 202 after subtracting 0 from 202.
Take the next digit (9) from the dividend and append it to 202, then repeat: 2029 / 451

Step 8:
The number 451 fits into 2029 4 times, leaving a remainder of 225.
The next digit of our result is 4. 
Result so far: 96104.0
Deduct 1804 from 2029 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 9:
451 can be fit into 2250 4 times, resulting in a remainder of 446.
Write down 4 as next digit of the result. 
Result so far: 96104.4
If we take 1804 away from 2250, we end up with 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Going ahead to step 10:
When dividing 4460 by 451, we get 9 with a remainder of 401.
The number 9 becomes the next digit in our result. 
Result so far: 96104.49
If we take 4059 away from 4460, we end up 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.

Step 11:
4010 divided by 451 is 8 with a remainder of 402.
Use 8 as the next digit of our solution. 
Result so far: 96104.498
The remainder is 402 after subtracting 3608 from 4010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Going ahead to step 12:
If we divide 4020 by 451, we get 8 and a remainder of 412.
The next digit of our result is 8. 
Result so far: 96104.4988
If we take 3608 away from 4020, we end up 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.

The final outcome is 96104.4988, with a leftover of 0.00412.