787858 ÷ 10 
Our goal is to divide 787858 by 10.

Advancing to step 1:
7 divided by 10 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 10

Let's proceed to step 2:
When dividing 78 by 10, we get 7 with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 70 away from 78, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 10

Advancing to step 3:
10 can be fit into 87 8 times, resulting in a remainder of 7.
The next digit of our result is 8. 
Result so far: 78.0
The remainder is 7 after subtracting 80 from 87.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 10

On to step 4:
10 can be fit into 78 7 times, resulting in a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 787.0
If we take 70 away from 78, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 10

Step 5:
85 divided by 10 is 8 with a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 7878.0
Subtract 80 from 85 to get 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 10

Moving on to step 6:
If we divide 58 by 10, we get 5 and a remainder of 8.
The next digit of our result is 5. 
Result so far: 78785.0
If we subtract 50 from 58, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 7:
The number 10 fits into 80 8 times, leaving a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 78785.8
Subtract 80 from 80 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.

On to step 8:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 78785.8
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.

Going ahead to step 9:
The number 10 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 78785.8
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.

The final outcome is 78785.8, with a leftover of 0.0.