851846 divided by 80 
We're looking to find how many times 80 goes into 851846.

On to step 1:
80 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 80

Advancing to step 2:
When dividing 85 by 80, we get 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 80 from 85 leaves us with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 80

On to step 3:
51 divided by 80 is 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (8) from the dividend, attach it to 51 and continue: 518 / 80

Going ahead to step 4:
80 goes into 518 6 times with a remainder of 38.
Write down 6 as next digit of the result. 
Result so far: 106.0
Deduct 480 from 518 and we're left with 38.
Append the next digit (4) from the dividend to 38 and continue with: 384 / 80

Moving on to step 5:
The number 80 fits into 384 4 times, leaving a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 1064.0
Subtracting 320 from 384 leaves us with 64.
Append the next digit (6) from the dividend to 64 and continue with: 646 / 80

On to step 6:
The number 80 fits into 646 8 times, leaving a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 10648.0
Subtracting 640 from 646 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
80 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 10648.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 8:
80 can be fit into 600 7 times, resulting in a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 10648.07
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 10648.075
If we take 400 away from 400, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
80 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 10648.075
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 10648.075
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 10648.075, with a leftover of 0.0.