We look at the division of 9807 by 42 
We want to divide 9807 by 42.

Going ahead to step 1:
9 divided by 42 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 42

On to step 2:
If we divide 98 by 42, we get 2 and a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 84 from 98 and we're left with 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 42

Let's proceed to step 3:
The number 42 fits into 140 3 times, leaving a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 23.0
If we take 126 away from 140, we end up with 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 42

Advancing to step 4:
The number 42 fits into 147 3 times, leaving a remainder of 21.
Put 3 as the next digit of the answer. 
Result so far: 233.0
The remainder is 21 after subtracting 126 from 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 5:
42 can be fit into 210 5 times, resulting in a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 233.5
The remainder is 0 after subtracting 210 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 6:
42 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 233.5
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.

On to step 7:
If we divide 0 by 42, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 233.5
Subtract 0 from 0 to 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.

The final outcome is 233.5, with a leftover of 0.0.