857939 ÷ 78 
We're looking to find how many times 78 goes into 857939.

Advancing to step 1:
78 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
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

Step 2:
If we divide 85 by 78, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 78 from 85, we get 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 78

Let's proceed to step 3:
78 can be fit into 77 0 times, resulting in a remainder of 77.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 77 after subtracting 0 from 77.
Take the next digit (9) from the dividend and append it to 77, then repeat: 779 / 78

Let's proceed to step 4:
78 can be fit into 779 9 times, resulting in a remainder of 77.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
If we take 702 away from 779, we end up with 77.
Append the next digit (3) from the dividend to 77 and continue with: 773 / 78

Going ahead to step 5:
When dividing 773 by 78, we get 9 with a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 1099.0
The remainder is 71 after subtracting 702 from 773.
Fetch the next digit (9) from the dividend, attach it to 71 and continue: 719 / 78

Step 6:
If we divide 719 by 78, we get 9 and a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 10999.0
Deduct 702 from 719 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
170 divided by 78 is 2 with a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 10999.2
Deduct 156 from 170 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 8:
140 divided by 78 is 1 with a remainder of 62.
Write down 1 as next digit of the result. 
Result so far: 10999.21
Deduct 78 from 140 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.

Advancing to step 9:
620 divided by 78 is 7 with a remainder of 74.
Record the quotient 7 as the next digit in the result. 
Result so far: 10999.217
Subtracting 546 from 620 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 10:
78 can be fit into 740 9 times, resulting in a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 10999.2179
Deduct 702 from 740 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 11:
78 can be fit into 380 4 times, resulting in a remainder of 68.
Use 4 as the next digit of our solution. 
Result so far: 10999.21794
Subtract 312 from 380 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 12:
78 goes into 680 8 times with a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 10999.217948
If we subtract 624 from 680, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 13:
If we divide 560 by 78, we get 7 and a remainder of 14.
The number 7 becomes the next digit in our result. 
Result so far: 10999.2179487
The remainder is 14 after subtracting 546 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 14:
If we divide 140 by 78, we get 1 and a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 10999.21794871
Subtract 78 from 140 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

In conclusion, the division gives 10999.21794871 with a balance of 6.2e-08.