79970 ÷ 86 
We're looking to find how many times 86 goes into 79970.

On to step 1:
86 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 86

Let's proceed to step 2:
When dividing 79 by 86, we get 0 with a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Fetch the next digit (9) from the dividend, attach it to 79 and continue: 799 / 86

Step 3:
86 can be fit into 799 9 times, resulting in a remainder of 25.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 774 from 799, we get 25.
Grab the next digit (7) from the dividend, add it to 25, then carry on: 257 / 86

Going ahead to step 4:
86 goes into 257 2 times with a remainder of 85.
Write down 2 as next digit of the result. 
Result so far: 92.0
If we take 172 away from 257, we end up with 85.
Grab the next digit (0) from the dividend, add it to 85, then carry on: 850 / 86

Going ahead to step 5:
The number 86 fits into 850 9 times, leaving a remainder of 76.
The next digit of our result is 9. 
Result so far: 929.0
Subtracting 774 from 850 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 6:
760 divided by 86 is 8 with a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 929.8
If we take 688 away from 760, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 7:
When dividing 720 by 86, we get 8 with a remainder of 32.
The number 8 becomes the next digit in our result. 
Result so far: 929.88
Subtract 688 from 720 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

In conclusion, the division gives 929.88 with a balance of 0.032.