669510 ÷ 54 
We want to figure out the number of times 669510 can be divided by 54.

Going ahead to step 1:
When dividing 6 by 54, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 54

Let's proceed to step 2:
If we divide 66 by 54, we get 1 and a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 12 after subtracting 54 from 66.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 54

Going ahead to step 3:
When dividing 129 by 54, we get 2 with a remainder of 21.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 108 from 129 leaves us with 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 54

Moving on to step 4:
When dividing 215 by 54, we get 3 with a remainder of 53.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
The remainder is 53 after subtracting 162 from 215.
Fetch the next digit (1) from the dividend, attach it to 53 and continue: 531 / 54

Step 5:
531 divided by 54 is 9 with a remainder of 45.
Write down 9 as next digit of the result. 
Result so far: 1239.0
Subtract 486 from 531 to get 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 54

Moving on to step 6:
54 can be fit into 450 8 times, resulting in a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 12398.0
If we take 432 away from 450, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
54 can be fit into 180 3 times, resulting in a remainder of 18.
The number 3 becomes the next digit in our result. 
Result so far: 12398.3
Deduct 162 from 180 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 8:
When dividing 180 by 54, we get 3 with a remainder of 18.
Record the quotient 3 as the next digit in the result. 
Result so far: 12398.33
Subtract 162 from 180 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 12398.33 with a remaining 0.018.