We divide 172137 by 43
We want to divide 172137 by 43.

Moving on to step 1:
43 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 43

Advancing to step 2:
The number 43 fits into 17 0 times, leaving a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Fetch the next digit (2) from the dividend, attach it to 17 and continue: 172 / 43

Moving on to step 3:
43 can be fit into 172 4 times, resulting in a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 172 from 172 and we're left with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 43

On to step 4:
43 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 40.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 43

Going ahead to step 5:
13 divided by 43 is 0 with a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 400.0
The remainder is 13 after subtracting 0 from 13.
Include the next digit (7) from the dividend after 13, then repeat: 137 / 43

Going ahead to step 6:
137 divided by 43 is 3 with a remainder of 8.
The next digit of our result is 3. 
Result so far: 4003.0
If we take 129 away from 137, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
80 divided by 43 is 1 with a remainder of 37.
Write down 1 as next digit of the result. 
Result so far: 4003.1
Subtracting 43 from 80 leaves us 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:
The number 43 fits into 370 8 times, leaving a remainder of 26.
The next digit of our result is 8. 
Result so far: 4003.18
Subtract 344 from 370 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 9:
43 goes into 260 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 4003.186
If we take 258 away from 260, we end up with 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:
20 divided by 43 is 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 4003.186
If we take 0 away from 20, we end up 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.

Going ahead to step 11:
43 can be fit into 200 4 times, resulting in a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 4003.18604
Deduct 172 from 200 and we're left 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.

Going ahead to step 12:
43 can be fit into 280 6 times, resulting in a remainder of 22.
The next digit of our result is 6. 
Result so far: 4003.186046
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.

On to step 13:
The number 43 fits into 220 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 4003.1860465
The remainder is 5 after subtracting 215 from 220.
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: 4003.18604651
If we take 43 away from 50, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 4003.18604651 and a remainder of 7e-09.