We divide 172858 by 39
We want to figure out the number of times 172858 can be divided by 39.

Moving on to step 1:
1 divided by 39 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 39

Advancing to step 2:
When dividing 17 by 39, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 39

Advancing to step 3:
39 goes into 172 4 times with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 156 from 172 to get 16.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 39

On to step 4:
39 can be fit into 168 4 times, resulting in a remainder of 12.
The next digit of our result is 4. 
Result so far: 44.0
Subtracting 156 from 168 leaves us with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 39

On to step 5:
The number 39 fits into 125 3 times, leaving a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 443.0
Subtracting 117 from 125 leaves us with 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 39

Advancing to step 6:
39 can be fit into 88 2 times, resulting in a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 4432.0
Subtract 78 from 88 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
39 goes into 100 2 times with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 4432.2
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 8:
When dividing 220 by 39, we get 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 4432.25
If we subtract 195 from 220, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
The number 39 fits into 250 6 times, leaving a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 4432.256
Subtract 234 from 250 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 10:
39 goes into 160 4 times with a remainder of 4.
The next digit of our result is 4. 
Result so far: 4432.2564
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
When dividing 40 by 39, we get 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 4432.25641
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 12:
39 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 4432.25641
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
When dividing 100 by 39, we get 2 with a remainder of 22.
The number 2 becomes the next digit in our result. 
Result so far: 4432.2564102
The remainder is 22 after subtracting 78 from 100.
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 14:
If we divide 220 by 39, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 4432.25641025
If we take 195 away from 220, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 4432.25641025 and a remainder of 2.5e-08.