We look at the division of 78355 by 18 
We want to divide 78355 by 18.

Going ahead to step 1:
When dividing 7 by 18, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 18

Moving on to step 2:
The number 18 fits into 78 4 times, leaving a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 72 from 78 to get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 18

Going ahead to step 3:
18 goes into 63 3 times with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
Subtracting 54 from 63 leaves us with 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 18

Moving on to step 4:
18 can be fit into 95 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 435.0
Deduct 90 from 95 and we're left with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 18

Moving on to step 5:
55 divided by 18 is 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 4353.0
If we subtract 54 from 55, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 6:
If we divide 10 by 18, we get 0 and a remainder of 10.
The next digit of our result is 0. 
Result so far: 4353.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 7:
When dividing 100 by 18, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 4353.05
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
18 can be fit into 100 5 times, resulting in a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 4353.055
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 4353.055 with a remainder of 0.001.