We look at the division of 878350 by 12 
We're looking to find how many times 12 goes into 878350.

Moving on to step 1:
The number 12 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 12

Step 2:
12 goes into 87 7 times with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 84 away from 87, we end up with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 12

Advancing to step 3:
12 can be fit into 38 3 times, resulting in a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 73.0
If we subtract 36 from 38, we get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 12

Moving on to step 4:
23 divided by 12 is 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 731.0
If we take 12 away from 23, we end up with 11.
Bring next digit (5) of the dividend behind the 11 and repeat the process: 115 / 12

Step 5:
115 divided by 12 is 9 with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 7319.0
If we take 108 away from 115, we end up with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 12

Moving on to step 6:
70 divided by 12 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 73195.0
If we subtract 60 from 70, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
12 can be fit into 100 8 times, resulting in a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 73195.8
The remainder is 4 after subtracting 96 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 73195.83
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
If we divide 40 by 12, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 73195.833
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 73195.833 with a balance of 0.0004.