856899 ÷ 78 
We're looking to find how many times 78 goes into 856899.

Advancing to step 1:
If we divide 8 by 78, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 78

On to step 2:
85 divided by 78 is 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 78 from 85 to get 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 78

Step 3:
The number 78 fits into 76 0 times, leaving a remainder of 76.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 76 after subtracting 0 from 76.
Include the next digit (8) from the dividend after 76, then repeat: 768 / 78

On to step 4:
768 divided by 78 is 9 with a remainder of 66.
The next digit of our result is 9. 
Result so far: 109.0
Subtracting 702 from 768 leaves us with 66.
Bring next digit (9) of the dividend behind the 66 and repeat the process: 669 / 78

Step 5:
When dividing 669 by 78, we get 8 with a remainder of 45.
The number 8 becomes the next digit in our result. 
Result so far: 1098.0
Subtracting 624 from 669 leaves us with 45.
Fetch the next digit (9) from the dividend, attach it to 45 and continue: 459 / 78

Going ahead to step 6:
If we divide 459 by 78, we get 5 and a remainder of 69.
The next digit of our result is 5. 
Result so far: 10985.0
If we subtract 390 from 459, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 7:
If we divide 690 by 78, we get 8 and a remainder of 66.
Use 8 as the next digit of our solution. 
Result so far: 10985.8
If we subtract 624 from 690, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 8:
The number 78 fits into 660 8 times, leaving a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 10985.88
If we subtract 624 from 660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 10985.88, with a leftover of 0.036.