We divide 612608 by 15
We want to figure out the number of times 612608 can be divided by 15.

Advancing to step 1:
If we divide 6 by 15, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (1) from the dividend, add it to 6, then carry on: 61 / 15

Let's proceed to step 2:
15 goes into 61 4 times with a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 60 from 61 and we're left with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 15

Moving on to step 3:
15 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 12, we end up with 12.
Include the next digit (6) from the dividend after 12, then repeat: 126 / 15

Step 4:
When dividing 126 by 15, we get 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 408.0
If we subtract 120 from 126, we get 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 15

Let's proceed to step 5:
The number 15 fits into 60 4 times, leaving a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 4084.0
If we take 60 away from 60, we end up with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 15

Step 6:
8 divided by 15 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 40840.0
Subtracting 0 from 8 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
If we divide 80 by 15, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 40840.5
If we take 75 away from 80, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
The number 15 fits into 50 3 times, leaving a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 40840.53
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
15 goes into 50 3 times with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 40840.533
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 40840.533 with a remainder of 0.0005.