669642 ÷ 15 
We want to divide 669642 by 15.

Moving on to step 1:
If we divide 6 by 15, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 15

Step 2:
When dividing 66 by 15, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 60 away from 66, we end up with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 15

Let's proceed to step 3:
15 goes into 69 4 times with a remainder of 9.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
The remainder is 9 after subtracting 60 from 69.
Fetch the next digit (6) from the dividend, attach it to 9 and continue: 96 / 15

Step 4:
If we divide 96 by 15, we get 6 and a remainder of 6.
The next digit of our result is 6. 
Result so far: 446.0
If we take 90 away from 96, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 15

Advancing to step 5:
If we divide 64 by 15, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 4464.0
Subtracting 60 from 64 leaves us with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 15

Going ahead to step 6:
15 can be fit into 42 2 times, resulting in a remainder of 12.
The next digit of our result is 2. 
Result so far: 44642.0
Subtract 30 from 42 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 7:
If we divide 120 by 15, we get 8 and a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 44642.8
Subtract 120 from 120 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.

Moving on to step 8:
When dividing 0 by 15, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 44642.8
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
15 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 44642.8
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 44642.8 and a remainder of 0.0.