172910 ÷ 25 
We want to divide 172910 by 25.

Moving on to step 1:
25 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 25

Let's proceed to step 2:
If we divide 17 by 25, we get 0 and a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Include the next digit (2) from the dividend after 17, then repeat: 172 / 25

On to step 3:
The number 25 fits into 172 6 times, leaving a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we take 150 away from 172, we end up with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 25

On to step 4:
When dividing 229 by 25, we get 9 with a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 69.0
The remainder is 4 after subtracting 225 from 229.
Include the next digit (1) from the dividend after 4, then repeat: 41 / 25

Let's proceed to step 5:
25 can be fit into 41 1 times, resulting in a remainder of 16.
The next digit of our result is 1. 
Result so far: 691.0
If we take 25 away from 41, we end up with 16.
Bring next digit (0) of the dividend behind the 16 and repeat the process: 160 / 25

On to step 6:
25 can be fit into 160 6 times, resulting in a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 6916.0
The remainder is 10 after subtracting 150 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
When dividing 100 by 25, we get 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 6916.4
If we subtract 100 from 100, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 8:
The number 25 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 6916.4
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
0 divided by 25 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6916.4
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 6916.4, with a leftover of 0.0.