Let's divide 84387431 by 808
We want to divide 84387431 by 808.

Step 1:
When dividing 8 by 808, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 808

Going ahead to step 2:
The number 808 fits into 84 0 times, leaving a remainder of 84.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 84, we end up with 84.
Grab the next digit (3) from the dividend, add it to 84, then carry on: 843 / 808

Going ahead to step 3:
If we divide 843 by 808, we get 1 and a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 808 from 843 and we're left with 35.
Fetch the next digit (8) from the dividend, attach it to 35 and continue: 358 / 808

Moving on to step 4:
808 goes into 358 0 times with a remainder of 358.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 358, we get 358.
Append the next digit (7) from the dividend to 358 and continue with: 3587 / 808

Going ahead to step 5:
3587 divided by 808 is 4 with a remainder of 355.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
If we subtract 3232 from 3587, we get 355.
Grab the next digit (4) from the dividend, add it to 355, then carry on: 3554 / 808

Moving on to step 6:
When dividing 3554 by 808, we get 4 with a remainder of 322.
The number 4 becomes the next digit in our result. 
Result so far: 1044.0
If we subtract 3232 from 3554, we get 322.
Take the next digit (3) from the dividend and append it to 322, then repeat: 3223 / 808

On to step 7:
3223 divided by 808 is 3 with a remainder of 799.
The next digit of our result is 3. 
Result so far: 10443.0
If we take 2424 away from 3223, we end up with 799.
Bring next digit (1) of the dividend behind the 799 and repeat the process: 7991 / 808

Step 8:
808 can be fit into 7991 9 times, resulting in a remainder of 719.
The next digit of our result is 9. 
Result so far: 104439.0
The remainder is 719 after subtracting 7272 from 7991.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7190, and continue the process.

Going ahead to step 9:
When dividing 7190 by 808, we get 8 with a remainder of 726.
The next digit of our result is 8. 
Result so far: 104439.8
Subtract 6464 from 7190 to get 726.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7260, and continue the process.

Step 10:
7260 divided by 808 is 8 with a remainder of 796.
Put 8 as the next digit of the answer. 
Result so far: 104439.88
Subtracting 6464 from 7260 leaves us with 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

In conclusion, the division gives 104439.88 with a balance of 0.796.