We look at the division of 869099 by 70 
Let's see how many times 70 fits into 869099.

Step 1:
8 divided by 70 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 70

Going ahead to step 2:
70 can be fit into 86 1 times, resulting in a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 70 from 86 to get 16.
Grab the next digit (9) from the dividend, add it to 16, then carry on: 169 / 70

Step 3:
169 divided by 70 is 2 with a remainder of 29.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 140 from 169, we get 29.
Append the next digit (0) from the dividend to 29 and continue with: 290 / 70

Step 4:
290 divided by 70 is 4 with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 124.0
The remainder is 10 after subtracting 280 from 290.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 70

Step 5:
109 divided by 70 is 1 with a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 1241.0
Subtract 70 from 109 to get 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 70

Let's proceed to step 6:
When dividing 399 by 70, we get 5 with a remainder of 49.
Use 5 as the next digit of our solution. 
Result so far: 12415.0
Subtracting 350 from 399 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 7:
490 divided by 70 is 7 with a remainder of 0.
The next digit of our result is 7. 
Result so far: 12415.7
If we subtract 490 from 490, 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.

Moving on to step 8:
70 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12415.7
If we subtract 0 from 0, 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 9:
If we divide 0 by 70, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12415.7
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.

The final outcome is 12415.7, with a leftover of 0.0.