43986921 divided by 434 
Our goal is to divide 43986921 by 434.

Moving on to step 1:
434 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 434

Moving on to step 2:
The number 434 fits into 43 0 times, leaving a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Fetch the next digit (9) from the dividend, attach it to 43 and continue: 439 / 434

Advancing to step 3:
When dividing 439 by 434, we get 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 5 after subtracting 434 from 439.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 434

Step 4:
If we divide 58 by 434, we get 0 and a remainder of 58.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 58, we get 58.
Include the next digit (6) from the dividend after 58, then repeat: 586 / 434

Let's proceed to step 5:
434 goes into 586 1 times with a remainder of 152.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
Subtracting 434 from 586 leaves us with 152.
Bring next digit (9) of the dividend behind the 152 and repeat the process: 1529 / 434

Step 6:
If we divide 1529 by 434, we get 3 and a remainder of 227.
The next digit of our result is 3. 
Result so far: 1013.0
The remainder is 227 after subtracting 1302 from 1529.
Bring next digit (2) of the dividend behind the 227 and repeat the process: 2272 / 434

Moving on to step 7:
When dividing 2272 by 434, we get 5 with a remainder of 102.
Put 5 as the next digit of the answer. 
Result so far: 10135.0
The remainder is 102 after subtracting 2170 from 2272.
Include the next digit (1) from the dividend after 102, then repeat: 1021 / 434

Let's proceed to step 8:
434 can be fit into 1021 2 times, resulting in a remainder of 153.
Put 2 as the next digit of the answer. 
Result so far: 101352.0
The remainder is 153 after subtracting 868 from 1021.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Going ahead to step 9:
1530 divided by 434 is 3 with a remainder of 228.
The next digit of our result is 3. 
Result so far: 101352.3
If we subtract 1302 from 1530, we get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 10:
The number 434 fits into 2280 5 times, leaving a remainder of 110.
Write down 5 as next digit of the result. 
Result so far: 101352.35
If we subtract 2170 from 2280, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 11:
434 can be fit into 1100 2 times, resulting in a remainder of 232.
Write down 2 as next digit of the result. 
Result so far: 101352.352
If we take 868 away from 1100, we end up with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

On to step 12:
The number 434 fits into 2320 5 times, leaving a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 101352.3525
If we take 2170 away from 2320, 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.

Going ahead to step 13:
The number 434 fits into 1500 3 times, leaving a remainder of 198.
Record the quotient 3 as the next digit in the result. 
Result so far: 101352.35253
If we take 1302 away from 1500, we end up with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Step 14:
434 goes into 1980 4 times with a remainder of 244.
Put 4 as the next digit of the answer. 
Result so far: 101352.352534
If we subtract 1736 from 1980, we get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Moving on to step 15:
When dividing 2440 by 434, we get 5 with a remainder of 270.
Write down 5 as next digit of the result. 
Result so far: 101352.3525345
Deduct 2170 from 2440 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Going ahead to step 16:
The number 434 fits into 2700 6 times, leaving a remainder of 96.
Record the quotient 6 as the next digit in the result. 
Result so far: 101352.35253456
The remainder is 96 after subtracting 2604 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The final outcome is 101352.35253456, with a leftover of 9.6e-08.