166375 ÷ 43 
Our goal is to divide 166375 by 43.

Going ahead to step 1:
43 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 43

Advancing to step 2:
When dividing 16 by 43, we get 0 with a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Fetch the next digit (6) from the dividend, attach it to 16 and continue: 166 / 43

Step 3:
When dividing 166 by 43, we get 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 129 away from 166, we end up with 37.
Grab the next digit (3) from the dividend, add it to 37, then carry on: 373 / 43

On to step 4:
373 divided by 43 is 8 with a remainder of 29.
The next digit of our result is 8. 
Result so far: 38.0
Subtracting 344 from 373 leaves us with 29.
Append the next digit (7) from the dividend to 29 and continue with: 297 / 43

On to step 5:
The number 43 fits into 297 6 times, leaving a remainder of 39.
Record the quotient 6 as the next digit in the result. 
Result so far: 386.0
Subtract 258 from 297 to get 39.
Take the next digit (5) from the dividend and append it to 39, then repeat: 395 / 43

Going ahead to step 6:
When dividing 395 by 43, we get 9 with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 3869.0
The remainder is 8 after subtracting 387 from 395.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
43 goes into 80 1 times with a remainder of 37.
Use 1 as the next digit of our solution. 
Result so far: 3869.1
Deduct 43 from 80 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 8:
When dividing 370 by 43, we get 8 with a remainder of 26.
Put 8 as the next digit of the answer. 
Result so far: 3869.18
If we take 344 away from 370, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 9:
260 divided by 43 is 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 3869.186
If we subtract 258 from 260, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
If we divide 20 by 43, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 3869.186
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
When dividing 200 by 43, we get 4 with a remainder of 28.
Record the quotient 4 as the next digit in the result. 
Result so far: 3869.18604
Subtracting 172 from 200 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
When dividing 280 by 43, we get 6 with a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 3869.186046
Subtracting 258 from 280 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 13:
The number 43 fits into 220 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 3869.1860465
If we take 215 away from 220, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 14:
The number 43 fits into 50 1 times, leaving a remainder of 7.
The next digit of our result is 1. 
Result so far: 3869.18604651
Subtract 43 from 50 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 3869.18604651 with a balance of 7e-09.