We look at the division of 778873 by 18 
Let's see how many times 18 fits into 778873.

Moving on to step 1:
The number 18 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 18

Going ahead to step 2:
When dividing 77 by 18, we get 4 with a remainder of 5.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 72 from 77 to get 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 18

Advancing to step 3:
When dividing 58 by 18, we get 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 43.0
Deduct 54 from 58 and we're left with 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 18

Step 4:
If we divide 48 by 18, we get 2 and a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 432.0
Deduct 36 from 48 and we're left with 12.
Fetch the next digit (7) from the dividend, attach it to 12 and continue: 127 / 18

Let's proceed to step 5:
If we divide 127 by 18, we get 7 and a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 4327.0
Subtracting 126 from 127 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 18

Step 6:
18 goes into 13 0 times with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 43270.0
Subtract 0 from 13 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
When dividing 130 by 18, we get 7 with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 43270.7
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
If we divide 40 by 18, we get 2 and a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 43270.72
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
40 divided by 18 is 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 43270.722
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 43270.722, with a leftover of 0.0004.