We're dividing 78458 by 79 
Let's see how many times 79 fits into 78458.

On to step 1:
79 goes into 7 0 times with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 79

Advancing to step 2:
79 goes into 78 0 times with a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Include the next digit (4) from the dividend after 78, then repeat: 784 / 79

Moving on to step 3:
79 goes into 784 9 times with a remainder of 73.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 711 from 784, we get 73.
Fetch the next digit (5) from the dividend, attach it to 73 and continue: 735 / 79

Advancing to step 4:
If we divide 735 by 79, we get 9 and a remainder of 24.
Use 9 as the next digit of our solution. 
Result so far: 99.0
Deduct 711 from 735 and we're left with 24.
Grab the next digit (8) from the dividend, add it to 24, then carry on: 248 / 79

Step 5:
79 can be fit into 248 3 times, resulting in a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 993.0
Deduct 237 from 248 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 6:
79 goes into 110 1 times with a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 993.1
Subtracting 79 from 110 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 7:
310 divided by 79 is 3 with a remainder of 73.
Use 3 as the next digit of our solution. 
Result so far: 993.13
If we take 237 away from 310, we end up with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 8:
79 goes into 730 9 times with a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 993.139
The remainder is 19 after subtracting 711 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 9:
79 can be fit into 190 2 times, resulting in a remainder of 32.
Write down 2 as next digit of the result. 
Result so far: 993.1392
The remainder is 32 after subtracting 158 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
79 can be fit into 320 4 times, resulting in a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 993.13924
If we take 316 away from 320, we end up 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.

Going ahead to step 11:
79 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 993.13924
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 12:
400 divided by 79 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 993.1392405
Subtract 395 from 400 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 13:
When dividing 50 by 79, we get 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 993.1392405
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 993.1392405, with a leftover of 5e-08.