17850464 ÷ 678 
Our goal is to divide 17850464 by 678.

On to step 1:
When dividing 1 by 678, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 678

Going ahead to step 2:
The number 678 fits into 17 0 times, leaving a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Fetch the next digit (8) from the dividend, attach it to 17 and continue: 178 / 678

Moving on to step 3:
678 goes into 178 0 times with a remainder of 178.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 178, we get 178.
Fetch the next digit (5) from the dividend, attach it to 178 and continue: 1785 / 678

Step 4:
If we divide 1785 by 678, we get 2 and a remainder of 429.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 1356 from 1785 leaves us with 429.
Bring next digit (0) of the dividend behind the 429 and repeat the process: 4290 / 678

Moving on to step 5:
678 goes into 4290 6 times with a remainder of 222.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
If we take 4068 away from 4290, we end up with 222.
Take the next digit (4) from the dividend and append it to 222, then repeat: 2224 / 678

Advancing to step 6:
2224 divided by 678 is 3 with a remainder of 190.
Write down 3 as next digit of the result. 
Result so far: 263.0
Subtract 2034 from 2224 to get 190.
Bring next digit (6) of the dividend behind the 190 and repeat the process: 1906 / 678

Let's proceed to step 7:
The number 678 fits into 1906 2 times, leaving a remainder of 550.
Record the quotient 2 as the next digit in the result. 
Result so far: 2632.0
The remainder is 550 after subtracting 1356 from 1906.
Append the next digit (4) from the dividend to 550 and continue with: 5504 / 678

Advancing to step 8:
678 goes into 5504 8 times with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 26328.0
If we take 5424 away from 5504, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 9:
800 divided by 678 is 1 with a remainder of 122.
Put 1 as the next digit of the answer. 
Result so far: 26328.1
Deduct 678 from 800 and we're left with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 10:
The number 678 fits into 1220 1 times, leaving a remainder of 542.
Record the quotient 1 as the next digit in the result. 
Result so far: 26328.11
Subtract 678 from 1220 to get 542.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5420, and continue the process.

The final outcome is 26328.11, with a leftover of 0.542.