18172851 ÷ 709 
We're looking to find how many times 709 goes into 18172851.

Step 1:
The number 709 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 709

Going ahead to step 2:
709 can be fit into 18 0 times, resulting in a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Grab the next digit (1) from the dividend, add it to 18, then carry on: 181 / 709

On to step 3:
181 divided by 709 is 0 with a remainder of 181.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 181, we end up with 181.
Take the next digit (7) from the dividend and append it to 181, then repeat: 1817 / 709

Let's proceed to step 4:
1817 divided by 709 is 2 with a remainder of 399.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 399 after subtracting 1418 from 1817.
Take the next digit (2) from the dividend and append it to 399, then repeat: 3992 / 709

Moving on to step 5:
The number 709 fits into 3992 5 times, leaving a remainder of 447.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we subtract 3545 from 3992, we get 447.
Fetch the next digit (8) from the dividend, attach it to 447 and continue: 4478 / 709

Let's proceed to step 6:
4478 divided by 709 is 6 with a remainder of 224.
The number 6 becomes the next digit in our result. 
Result so far: 256.0
Subtract 4254 from 4478 to get 224.
Append the next digit (5) from the dividend to 224 and continue with: 2245 / 709

Going ahead to step 7:
709 can be fit into 2245 3 times, resulting in a remainder of 118.
The number 3 becomes the next digit in our result. 
Result so far: 2563.0
If we subtract 2127 from 2245, we get 118.
Append the next digit (1) from the dividend to 118 and continue with: 1181 / 709

Let's proceed to step 8:
When dividing 1181 by 709, we get 1 with a remainder of 472.
Use 1 as the next digit of our solution. 
Result so far: 25631.0
Subtract 709 from 1181 to get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

Advancing to step 9:
The number 709 fits into 4720 6 times, leaving a remainder of 466.
The number 6 becomes the next digit in our result. 
Result so far: 25631.6
Deduct 4254 from 4720 and we're left with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Advancing to step 10:
If we divide 4660 by 709, we get 6 and a remainder of 406.
Use 6 as the next digit of our solution. 
Result so far: 25631.66
Subtracting 4254 from 4660 leaves us with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Our division results in 25631.66 with a remaining 0.406.