We divide 858878 by 12
Our goal is to divide 858878 by 12.

Step 1:
12 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 12

Step 2:
When dividing 85 by 12, we get 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 84 from 85 leaves us with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 12

Advancing to step 3:
When dividing 18 by 12, we get 1 with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 71.0
Subtracting 12 from 18 leaves us with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 12

Step 4:
When dividing 68 by 12, we get 5 with a remainder of 8.
The next digit of our result is 5. 
Result so far: 715.0
If we subtract 60 from 68, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 12

Step 5:
87 divided by 12 is 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 7157.0
If we subtract 84 from 87, we get 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 12

Let's proceed to step 6:
12 can be fit into 38 3 times, resulting in a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 71573.0
If we take 36 away from 38, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
When dividing 20 by 12, we get 1 with a remainder of 8.
The next digit of our result is 1. 
Result so far: 71573.1
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 71573.16
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
When dividing 80 by 12, we get 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 71573.166
If we subtract 72 from 80, 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.

Our division results in 71573.166 with a remaining 0.0008.