We're dividing 870408 by 79 
Let's see how many times 79 fits into 870408.

Going ahead to step 1:
When dividing 8 by 79, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 79

Step 2:
If we divide 87 by 79, we get 1 and a remainder of 8.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 79 from 87 and we're left with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 79

Moving on to step 3:
79 goes into 80 1 times with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Deduct 79 from 80 and we're left with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 79

Step 4:
14 divided by 79 is 0 with a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 110.0
Deduct 0 from 14 and we're left with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 79

Let's proceed to step 5:
When dividing 140 by 79, we get 1 with a remainder of 61.
Record the quotient 1 as the next digit in the result. 
Result so far: 1101.0
Deduct 79 from 140 and we're left with 61.
Fetch the next digit (8) from the dividend, attach it to 61 and continue: 618 / 79

On to step 6:
79 can be fit into 618 7 times, resulting in a remainder of 65.
Record the quotient 7 as the next digit in the result. 
Result so far: 11017.0
The remainder is 65 after subtracting 553 from 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 7:
If we divide 650 by 79, we get 8 and a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 11017.8
Subtracting 632 from 650 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
When dividing 180 by 79, we get 2 with a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 11017.82
If we take 158 away from 180, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 9:
79 goes into 220 2 times with a remainder of 62.
Put 2 as the next digit of the answer. 
Result so far: 11017.822
Deduct 158 from 220 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The final outcome is 11017.822, with a leftover of 0.0062.