79671709 ÷ 25 
We're looking to find how many times 25 goes into 79671709.

Going ahead to step 1:
When dividing 7 by 25, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 25

Step 2:
When dividing 79 by 25, we get 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 75 from 79 leaves us with 4.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 25

Moving on to step 3:
46 divided by 25 is 1 with a remainder of 21.
The next digit of our result is 1. 
Result so far: 31.0
Deduct 25 from 46 and we're left with 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 25

Moving on to step 4:
217 divided by 25 is 8 with a remainder of 17.
The next digit of our result is 8. 
Result so far: 318.0
Deduct 200 from 217 and we're left with 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 25

Advancing to step 5:
25 can be fit into 171 6 times, resulting in a remainder of 21.
Use 6 as the next digit of our solution. 
Result so far: 3186.0
The remainder is 21 after subtracting 150 from 171.
Append the next digit (7) from the dividend to 21 and continue with: 217 / 25

Advancing to step 6:
When dividing 217 by 25, we get 8 with a remainder of 17.
Write down 8 as next digit of the result. 
Result so far: 31868.0
Deduct 200 from 217 and we're left with 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 25

Let's proceed to step 7:
If we divide 170 by 25, we get 6 and a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 318686.0
Subtract 150 from 170 to get 20.
Fetch the next digit (9) from the dividend, attach it to 20 and continue: 209 / 25

On to step 8:
The number 25 fits into 209 8 times, leaving a remainder of 9.
Use 8 as the next digit of our solution. 
Result so far: 3186868.0
If we take 200 away from 209, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 9:
If we divide 90 by 25, we get 3 and a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 3186868.3
If we subtract 75 from 90, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 10:
When dividing 150 by 25, we get 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 3186868.36
The remainder is 0 after subtracting 150 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
25 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3186868.36
Subtract 0 from 0 to 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.

Step 12:
0 divided by 25 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3186868.36
Deduct 0 from 0 and we're left 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 3186868.36, with a leftover of 0.0.