Let's divide 9451644 by 809
Our goal is to divide 9451644 by 809.

Let's proceed to step 1:
9 divided by 809 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 809

Going ahead to step 2:
809 can be fit into 94 0 times, resulting in a remainder of 94.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 94 to get 94.
Append the next digit (5) from the dividend to 94 and continue with: 945 / 809

On to step 3:
If we divide 945 by 809, we get 1 and a remainder of 136.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 809 away from 945, we end up with 136.
Fetch the next digit (1) from the dividend, attach it to 136 and continue: 1361 / 809

Moving on to step 4:
1361 divided by 809 is 1 with a remainder of 552.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we take 809 away from 1361, we end up with 552.
Grab the next digit (6) from the dividend, add it to 552, then carry on: 5526 / 809

On to step 5:
The number 809 fits into 5526 6 times, leaving a remainder of 672.
The next digit of our result is 6. 
Result so far: 116.0
If we subtract 4854 from 5526, we get 672.
Fetch the next digit (4) from the dividend, attach it to 672 and continue: 6724 / 809

Going ahead to step 6:
809 goes into 6724 8 times with a remainder of 252.
Put 8 as the next digit of the answer. 
Result so far: 1168.0
If we subtract 6472 from 6724, we get 252.
Take the next digit (4) from the dividend and append it to 252, then repeat: 2524 / 809

Moving on to step 7:
809 can be fit into 2524 3 times, resulting in a remainder of 97.
Write down 3 as next digit of the result. 
Result so far: 11683.0
Deduct 2427 from 2524 and we're left with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Advancing to step 8:
If we divide 970 by 809, we get 1 and a remainder of 161.
Use 1 as the next digit of our solution. 
Result so far: 11683.1
The remainder is 161 after subtracting 809 from 970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Moving on to step 9:
The number 809 fits into 1610 1 times, leaving a remainder of 801.
Put 1 as the next digit of the answer. 
Result so far: 11683.11
If we take 809 away from 1610, we end up with 801.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8010, and continue the process.

Our division results in 11683.11 with a remaining 0.801.