We're dividing 43174843 by 355 
We want to divide 43174843 by 355.

On to step 1:
355 can be fit into 4 0 times, resulting in a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 355

Advancing to step 2:
355 goes into 43 0 times with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Append the next digit (1) from the dividend to 43 and continue with: 431 / 355

Advancing to step 3:
431 divided by 355 is 1 with a remainder of 76.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 355 from 431 leaves us with 76.
Include the next digit (7) from the dividend after 76, then repeat: 767 / 355

Step 4:
When dividing 767 by 355, we get 2 with a remainder of 57.
Put 2 as the next digit of the answer. 
Result so far: 12.0
The remainder is 57 after subtracting 710 from 767.
Append the next digit (4) from the dividend to 57 and continue with: 574 / 355

Let's proceed to step 5:
The number 355 fits into 574 1 times, leaving a remainder of 219.
The next digit of our result is 1. 
Result so far: 121.0
If we subtract 355 from 574, we get 219.
Grab the next digit (8) from the dividend, add it to 219, then carry on: 2198 / 355

Step 6:
2198 divided by 355 is 6 with a remainder of 68.
Record the quotient 6 as the next digit in the result. 
Result so far: 1216.0
The remainder is 68 after subtracting 2130 from 2198.
Bring next digit (4) of the dividend behind the 68 and repeat the process: 684 / 355

Step 7:
355 goes into 684 1 times with a remainder of 329.
Write down 1 as next digit of the result. 
Result so far: 12161.0
Deduct 355 from 684 and we're left with 329.
Include the next digit (3) from the dividend after 329, then repeat: 3293 / 355

Moving on to step 8:
When dividing 3293 by 355, we get 9 with a remainder of 98.
Record the quotient 9 as the next digit in the result. 
Result so far: 121619.0
The remainder is 98 after subtracting 3195 from 3293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Let's proceed to step 9:
The number 355 fits into 980 2 times, leaving a remainder of 270.
The number 2 becomes the next digit in our result. 
Result so far: 121619.2
Deduct 710 from 980 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.

Advancing to step 10:
The number 355 fits into 2700 7 times, leaving a remainder of 215.
Write down 7 as next digit of the result. 
Result so far: 121619.27
Subtracting 2485 from 2700 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Step 11:
The number 355 fits into 2150 6 times, leaving a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 121619.276
If we subtract 2130 from 2150, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
355 can be fit into 200 0 times, resulting in a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 121619.276
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 13:
The number 355 fits into 2000 5 times, leaving a remainder of 225.
The next digit of our result is 5. 
Result so far: 121619.27605
Deduct 1775 from 2000 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.

On to step 14:
355 goes into 2250 6 times with a remainder of 120.
The number 6 becomes the next digit in our result. 
Result so far: 121619.276056
Subtracting 2130 from 2250 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 15:
355 goes into 1200 3 times with a remainder of 135.
Use 3 as the next digit of our solution. 
Result so far: 121619.2760563
Deduct 1065 from 1200 and we're left with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Advancing to step 16:
355 goes into 1350 3 times with a remainder of 285.
Record the quotient 3 as the next digit in the result. 
Result so far: 121619.27605633
Deduct 1065 from 1350 and we're left with 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

After the division, we end up with 121619.27605633 and a remainder of 2.85e-07.