40991507 divided by 171 
Our goal is to divide 40991507 by 171.

Let's proceed to step 1:
The number 171 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 171

On to step 2:
When dividing 40 by 171, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Append the next digit (9) from the dividend to 40 and continue with: 409 / 171

Advancing to step 3:
The number 171 fits into 409 2 times, leaving a remainder of 67.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 342 from 409 and we're left with 67.
Include the next digit (9) from the dividend after 67, then repeat: 679 / 171

Step 4:
679 divided by 171 is 3 with a remainder of 166.
Use 3 as the next digit of our solution. 
Result so far: 23.0
The remainder is 166 after subtracting 513 from 679.
Fetch the next digit (1) from the dividend, attach it to 166 and continue: 1661 / 171

On to step 5:
When dividing 1661 by 171, we get 9 with a remainder of 122.
Write down 9 as next digit of the result. 
Result so far: 239.0
The remainder is 122 after subtracting 1539 from 1661.
Grab the next digit (5) from the dividend, add it to 122, then carry on: 1225 / 171

Moving on to step 6:
The number 171 fits into 1225 7 times, leaving a remainder of 28.
Record the quotient 7 as the next digit in the result. 
Result so far: 2397.0
The remainder is 28 after subtracting 1197 from 1225.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 171

Step 7:
171 can be fit into 280 1 times, resulting in a remainder of 109.
Write down 1 as next digit of the result. 
Result so far: 23971.0
Subtracting 171 from 280 leaves us with 109.
Take the next digit (7) from the dividend and append it to 109, then repeat: 1097 / 171

Going ahead to step 8:
If we divide 1097 by 171, we get 6 and a remainder of 71.
Use 6 as the next digit of our solution. 
Result so far: 239716.0
If we subtract 1026 from 1097, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
171 can be fit into 710 4 times, resulting in a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 239716.4
Deduct 684 from 710 and we're left 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.

On to step 10:
260 divided by 171 is 1 with a remainder of 89.
The number 1 becomes the next digit in our result. 
Result so far: 239716.41
Subtracting 171 from 260 leaves us with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 11:
171 can be fit into 890 5 times, resulting in a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 239716.415
Subtract 855 from 890 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 12:
When dividing 350 by 171, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 239716.4152
If we subtract 342 from 350, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
When dividing 80 by 171, we get 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 239716.4152
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 14:
If we divide 800 by 171, we get 4 and a remainder of 116.
Use 4 as the next digit of our solution. 
Result so far: 239716.415204
The remainder is 116 after subtracting 684 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 15:
When dividing 1160 by 171, we get 6 with a remainder of 134.
Use 6 as the next digit of our solution. 
Result so far: 239716.4152046
If we subtract 1026 from 1160, we get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 16:
The number 171 fits into 1340 7 times, leaving a remainder of 143.
The number 7 becomes the next digit in our result. 
Result so far: 239716.41520467
Subtracting 1197 from 1340 leaves us with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

After the division, we end up with 239716.41520467 and a remainder of 1.43e-07.