We're dividing 8453847 by 816 
Let's see how many times 816 fits into 8453847.

Step 1:
816 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 816

Let's proceed to step 2:
If we divide 84 by 816, we get 0 and a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Grab the next digit (5) from the dividend, add it to 84, then carry on: 845 / 816

Moving on to step 3:
If we divide 845 by 816, we get 1 and a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 816 from 845 and we're left with 29.
Fetch the next digit (3) from the dividend, attach it to 29 and continue: 293 / 816

Advancing to step 4:
The number 816 fits into 293 0 times, leaving a remainder of 293.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 293, we end up with 293.
Fetch the next digit (8) from the dividend, attach it to 293 and continue: 2938 / 816

Going ahead to step 5:
When dividing 2938 by 816, we get 3 with a remainder of 490.
Put 3 as the next digit of the answer. 
Result so far: 103.0
If we take 2448 away from 2938, we end up with 490.
Bring next digit (4) of the dividend behind the 490 and repeat the process: 4904 / 816

Step 6:
4904 divided by 816 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 1036.0
If we subtract 4896 from 4904, we get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 816

Going ahead to step 7:
87 divided by 816 is 0 with a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 10360.0
Subtracting 0 from 87 leaves us with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Going ahead to step 8:
If we divide 870 by 816, we get 1 and a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 10360.1
Subtract 816 from 870 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 9:
When dividing 540 by 816, we get 0 with a remainder of 540.
Use 0 as the next digit of our solution. 
Result so far: 10360.1
The remainder is 540 after subtracting 0 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 10:
816 goes into 5400 6 times with a remainder of 504.
Record the quotient 6 as the next digit in the result. 
Result so far: 10360.106
Deduct 4896 from 5400 and we're left with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Advancing to step 11:
If we divide 5040 by 816, we get 6 and a remainder of 144.
Use 6 as the next digit of our solution. 
Result so far: 10360.1066
Subtract 4896 from 5040 to get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

The final result is 10360.1066 with a remainder of 0.00144.