6642585 divided by 816 
Our goal is to divide 6642585 by 816.

Step 1:
When dividing 6 by 816, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 816

Step 2:
816 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Bring next digit (4) of the dividend behind the 66 and repeat the process: 664 / 816

Let's proceed to step 3:
The number 816 fits into 664 0 times, leaving a remainder of 664.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 664 and we're left with 664.
Include the next digit (2) from the dividend after 664, then repeat: 6642 / 816

Going ahead to step 4:
816 goes into 6642 8 times with a remainder of 114.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 6528 from 6642, we get 114.
Take the next digit (5) from the dividend and append it to 114, then repeat: 1145 / 816

Moving on to step 5:
The number 816 fits into 1145 1 times, leaving a remainder of 329.
The next digit of our result is 1. 
Result so far: 81.0
Subtracting 816 from 1145 leaves us with 329.
Include the next digit (8) from the dividend after 329, then repeat: 3298 / 816

Going ahead to step 6:
816 can be fit into 3298 4 times, resulting in a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 814.0
If we subtract 3264 from 3298, we get 34.
Grab the next digit (5) from the dividend, add it to 34, then carry on: 345 / 816

Let's proceed to step 7:
816 can be fit into 345 0 times, resulting in a remainder of 345.
The next digit of our result is 0. 
Result so far: 8140.0
If we subtract 0 from 345, we get 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Advancing to step 8:
When dividing 3450 by 816, we get 4 with a remainder of 186.
Write down 4 as next digit of the result. 
Result so far: 8140.4
If we subtract 3264 from 3450, we get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Going ahead to step 9:
If we divide 1860 by 816, we get 2 and a remainder of 228.
Put 2 as the next digit of the answer. 
Result so far: 8140.42
Deduct 1632 from 1860 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Step 10:
816 goes into 2280 2 times with a remainder of 648.
Put 2 as the next digit of the answer. 
Result so far: 8140.422
If we take 1632 away from 2280, we end up with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

In conclusion, the division gives 8140.422 with a balance of 0.0648.