Let's divide 57379909 by 15
Let's see how many times 15 fits into 57379909.

Going ahead to step 1:
15 can be fit into 5 0 times, resulting in a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 15

Going ahead to step 2:
15 can be fit into 57 3 times, resulting in a remainder of 12.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 45 away from 57, we end up with 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 15

Going ahead to step 3:
15 goes into 123 8 times with a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
Deduct 120 from 123 and we're left with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 15

Step 4:
37 divided by 15 is 2 with a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 382.0
If we take 30 away from 37, we end up with 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 15

Advancing to step 5:
If we divide 79 by 15, we get 5 and a remainder of 4.
The next digit of our result is 5. 
Result so far: 3825.0
The remainder is 4 after subtracting 75 from 79.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 15

On to step 6:
If we divide 49 by 15, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 38253.0
Deduct 45 from 49 and we're left with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 15

Advancing to step 7:
15 goes into 40 2 times with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 382532.0
If we subtract 30 from 40, we get 10.
Include the next digit (9) from the dividend after 10, then repeat: 109 / 15

On to step 8:
If we divide 109 by 15, we get 7 and a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 3825327.0
Subtracting 105 from 109 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
When dividing 40 by 15, we get 2 with a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 3825327.2
If we subtract 30 from 40, we get 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 10:
15 can be fit into 100 6 times, resulting in a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 3825327.26
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
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: 3825327.266
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 3825327.266, and the remainder is 0.001.