Let's divide 43645191 by 451
Let's see how many times 451 fits into 43645191.

Step 1:
The number 451 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 451

Moving on to step 2:
The number 451 fits into 43 0 times, leaving a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Bring next digit (6) of the dividend behind the 43 and repeat the process: 436 / 451

Moving on to step 3:
If we divide 436 by 451, we get 0 and a remainder of 436.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 436 after subtracting 0 from 436.
Include the next digit (4) from the dividend after 436, then repeat: 4364 / 451

Let's proceed to step 4:
When dividing 4364 by 451, we get 9 with a remainder of 305.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 305 after subtracting 4059 from 4364.
Include the next digit (5) from the dividend after 305, then repeat: 3055 / 451

Going ahead to step 5:
The number 451 fits into 3055 6 times, leaving a remainder of 349.
The next digit of our result is 6. 
Result so far: 96.0
The remainder is 349 after subtracting 2706 from 3055.
Bring next digit (1) of the dividend behind the 349 and repeat the process: 3491 / 451

Moving on to step 6:
3491 divided by 451 is 7 with a remainder of 334.
Use 7 as the next digit of our solution. 
Result so far: 967.0
Subtract 3157 from 3491 to get 334.
Append the next digit (9) from the dividend to 334 and continue with: 3349 / 451

Advancing to step 7:
451 can be fit into 3349 7 times, resulting in a remainder of 192.
Record the quotient 7 as the next digit in the result. 
Result so far: 9677.0
Subtract 3157 from 3349 to get 192.
Include the next digit (1) from the dividend after 192, then repeat: 1921 / 451

Advancing to step 8:
451 can be fit into 1921 4 times, resulting in a remainder of 117.
The next digit of our result is 4. 
Result so far: 96774.0
Deduct 1804 from 1921 and we're left with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Step 9:
451 can be fit into 1170 2 times, resulting in a remainder of 268.
The next digit of our result is 2. 
Result so far: 96774.2
Subtracting 902 from 1170 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

On to step 10:
451 can be fit into 2680 5 times, resulting in a remainder of 425.
Write down 5 as next digit of the result. 
Result so far: 96774.25
Subtract 2255 from 2680 to get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Advancing to step 11:
451 goes into 4250 9 times with a remainder of 191.
Write down 9 as next digit of the result. 
Result so far: 96774.259
Deduct 4059 from 4250 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Moving on to step 12:
1910 divided by 451 is 4 with a remainder of 106.
Write down 4 as next digit of the result. 
Result so far: 96774.2594
If we subtract 1804 from 1910, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Advancing to step 13:
When dividing 1060 by 451, we get 2 with a remainder of 158.
Record the quotient 2 as the next digit in the result. 
Result so far: 96774.25942
Subtract 902 from 1060 to get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

On to step 14:
1580 divided by 451 is 3 with a remainder of 227.
The number 3 becomes the next digit in our result. 
Result so far: 96774.259423
The remainder is 227 after subtracting 1353 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Moving on to step 15:
2270 divided by 451 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 96774.2594235
The remainder is 15 after subtracting 2255 from 2270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 16:
When dividing 150 by 451, we get 0 with a remainder of 150.
The next digit of our result is 0. 
Result so far: 96774.2594235
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

In conclusion, the division gives 96774.2594235 with a balance of 1.5e-07.