43666201 ÷ 538 
Our goal is to divide 43666201 by 538.

Step 1:
538 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 538

Step 2:
If we divide 43 by 538, we get 0 and 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 (6) from the dividend, add it to 43, then carry on: 436 / 538

On to step 3:
436 divided by 538 is 0 with a remainder of 436.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 436 to get 436.
Bring next digit (6) of the dividend behind the 436 and repeat the process: 4366 / 538

Step 4:
When dividing 4366 by 538, we get 8 with a remainder of 62.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 62 after subtracting 4304 from 4366.
Grab the next digit (6) from the dividend, add it to 62, then carry on: 626 / 538

Let's proceed to step 5:
626 divided by 538 is 1 with a remainder of 88.
Put 1 as the next digit of the answer. 
Result so far: 81.0
The remainder is 88 after subtracting 538 from 626.
Grab the next digit (2) from the dividend, add it to 88, then carry on: 882 / 538

On to step 6:
If we divide 882 by 538, we get 1 and a remainder of 344.
Write down 1 as next digit of the result. 
Result so far: 811.0
The remainder is 344 after subtracting 538 from 882.
Bring next digit (0) of the dividend behind the 344 and repeat the process: 3440 / 538

Moving on to step 7:
538 goes into 3440 6 times with a remainder of 212.
Use 6 as the next digit of our solution. 
Result so far: 8116.0
Deduct 3228 from 3440 and we're left with 212.
Include the next digit (1) from the dividend after 212, then repeat: 2121 / 538

Let's proceed to step 8:
If we divide 2121 by 538, we get 3 and a remainder of 507.
Record the quotient 3 as the next digit in the result. 
Result so far: 81163.0
If we take 1614 away from 2121, we end up with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Advancing to step 9:
When dividing 5070 by 538, we get 9 with a remainder of 228.
Record the quotient 9 as the next digit in the result. 
Result so far: 81163.9
If we take 4842 away from 5070, we end up with 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:
If we divide 2280 by 538, we get 4 and a remainder of 128.
Write down 4 as next digit of the result. 
Result so far: 81163.94
Deduct 2152 from 2280 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 11:
The number 538 fits into 1280 2 times, leaving a remainder of 204.
Record the quotient 2 as the next digit in the result. 
Result so far: 81163.942
If we subtract 1076 from 1280, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 12:
538 can be fit into 2040 3 times, resulting in a remainder of 426.
Write down 3 as next digit of the result. 
Result so far: 81163.9423
Subtract 1614 from 2040 to get 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Moving on to step 13:
If we divide 4260 by 538, we get 7 and a remainder of 494.
Write down 7 as next digit of the result. 
Result so far: 81163.94237
The remainder is 494 after subtracting 3766 from 4260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

On to step 14:
538 can be fit into 4940 9 times, resulting in a remainder of 98.
The number 9 becomes the next digit in our result. 
Result so far: 81163.942379
If we subtract 4842 from 4940, we get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 15:
980 divided by 538 is 1 with a remainder of 442.
Use 1 as the next digit of our solution. 
Result so far: 81163.9423791
If we take 538 away from 980, we end up with 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

Moving on to step 16:
4420 divided by 538 is 8 with a remainder of 116.
The next digit of our result is 8. 
Result so far: 81163.94237918
Subtracting 4304 from 4420 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

The final result is 81163.94237918 with a remainder of 1.16e-07.