We look at the division of 76172521 by 717 
We're looking to find how many times 717 goes into 76172521.

On to step 1:
717 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 717

Let's proceed to step 2:
717 can be fit into 76 0 times, resulting in a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 76 after subtracting 0 from 76.
Append the next digit (1) from the dividend to 76 and continue with: 761 / 717

Moving on to step 3:
The number 717 fits into 761 1 times, leaving a remainder of 44.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 717 from 761, we get 44.
Bring next digit (7) of the dividend behind the 44 and repeat the process: 447 / 717

Moving on to step 4:
The number 717 fits into 447 0 times, leaving a remainder of 447.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 447 after subtracting 0 from 447.
Grab the next digit (2) from the dividend, add it to 447, then carry on: 4472 / 717

Step 5:
If we divide 4472 by 717, we get 6 and a remainder of 170.
Write down 6 as next digit of the result. 
Result so far: 106.0
Deduct 4302 from 4472 and we're left with 170.
Grab the next digit (5) from the dividend, add it to 170, then carry on: 1705 / 717

Let's proceed to step 6:
The number 717 fits into 1705 2 times, leaving a remainder of 271.
The next digit of our result is 2. 
Result so far: 1062.0
Subtract 1434 from 1705 to get 271.
Bring next digit (2) of the dividend behind the 271 and repeat the process: 2712 / 717

Moving on to step 7:
2712 divided by 717 is 3 with a remainder of 561.
Put 3 as the next digit of the answer. 
Result so far: 10623.0
If we subtract 2151 from 2712, we get 561.
Append the next digit (1) from the dividend to 561 and continue with: 5611 / 717

Going ahead to step 8:
5611 divided by 717 is 7 with a remainder of 592.
Use 7 as the next digit of our solution. 
Result so far: 106237.0
Deduct 5019 from 5611 and we're left with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Going ahead to step 9:
717 can be fit into 5920 8 times, resulting in a remainder of 184.
Use 8 as the next digit of our solution. 
Result so far: 106237.8
If we take 5736 away from 5920, we end up with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

On to step 10:
If we divide 1840 by 717, we get 2 and a remainder of 406.
Use 2 as the next digit of our solution. 
Result so far: 106237.82
The remainder is 406 after subtracting 1434 from 1840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

On to step 11:
717 can be fit into 4060 5 times, resulting in a remainder of 475.
Put 5 as the next digit of the answer. 
Result so far: 106237.825
The remainder is 475 after subtracting 3585 from 4060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 12:
When dividing 4750 by 717, we get 6 with a remainder of 448.
Record the quotient 6 as the next digit in the result. 
Result so far: 106237.8256
If we subtract 4302 from 4750, we get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Moving on to step 13:
717 goes into 4480 6 times with a remainder of 178.
Use 6 as the next digit of our solution. 
Result so far: 106237.82566
The remainder is 178 after subtracting 4302 from 4480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

The final result is 106237.82566 with a remainder of 0.000178.