We're dividing 7408993 by 15 
We want to figure out the number of times 7408993 can be divided by 15.

Advancing to step 1:
When dividing 7 by 15, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (4) from the dividend, attach it to 7 and continue: 74 / 15

Moving on to step 2:
If we divide 74 by 15, we get 4 and a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 60 from 74 and we're left with 14.
Grab the next digit (0) from the dividend, add it to 14, then carry on: 140 / 15

Step 3:
15 can be fit into 140 9 times, resulting in a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 49.0
If we take 135 away from 140, we end up with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 15

Step 4:
When dividing 58 by 15, we get 3 with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 493.0
Deduct 45 from 58 and we're left with 13.
Include the next digit (9) from the dividend after 13, then repeat: 139 / 15

Let's proceed to step 5:
The number 15 fits into 139 9 times, leaving a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 4939.0
Subtracting 135 from 139 leaves us with 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 15

Advancing to step 6:
15 can be fit into 49 3 times, resulting in a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 49393.0
Subtract 45 from 49 to get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 15

Let's proceed to step 7:
When dividing 43 by 15, we get 2 with a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 493932.0
The remainder is 13 after subtracting 30 from 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 8:
15 can be fit into 130 8 times, resulting in a remainder of 10.
Put 8 as the next digit of the answer. 
Result so far: 493932.8
Subtracting 120 from 130 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
If we divide 100 by 15, we get 6 and a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 493932.86
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
15 goes into 100 6 times with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 493932.866
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 493932.866 and a remainder of 0.001.