We're dividing 858078 by 7 
We want to figure out the number of times 858078 can be divided by 7.

Step 1:
If we divide 8 by 7, we get 1 and a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 1 after subtracting 7 from 8.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 7

Going ahead to step 2:
The number 7 fits into 15 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
Subtracting 14 from 15 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 7

Advancing to step 3:
If we divide 18 by 7, we get 2 and a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 122.0
If we subtract 14 from 18, we get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 7

Step 4:
When dividing 40 by 7, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 1225.0
If we subtract 35 from 40, we get 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 7

Going ahead to step 5:
If we divide 57 by 7, we get 8 and a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 12258.0
The remainder is 1 after subtracting 56 from 57.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 7

Let's proceed to step 6:
18 divided by 7 is 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 122582.0
The remainder is 4 after subtracting 14 from 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
When dividing 40 by 7, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 122582.5
The remainder is 5 after subtracting 35 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 7 fits into 50 7 times, leaving a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 122582.57
Subtract 49 from 50 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
10 divided by 7 is 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 122582.571
If we take 7 away from 10, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
7 goes into 30 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 122582.5714
The remainder is 2 after subtracting 28 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 11:
20 divided by 7 is 2 with a remainder of 6.
The next digit of our result is 2. 
Result so far: 122582.57142
If we subtract 14 from 20, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 12:
When dividing 60 by 7, we get 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 122582.571428
The remainder is 4 after subtracting 56 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 13:
40 divided by 7 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 122582.5714285
Subtract 35 from 40 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 14:
When dividing 50 by 7, we get 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 122582.57142857
Subtract 49 from 50 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 122582.57142857 with a balance of 1e-09.