57778372 divided by 15 
Let's see how many times 15 fits into 57778372.

Advancing to step 1:
The number 15 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 15

Advancing to step 2:
15 goes into 57 3 times with a remainder of 12.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 45 from 57 leaves us with 12.
Bring next digit (7) of the dividend behind the 12 and repeat the process: 127 / 15

Step 3:
If we divide 127 by 15, we get 8 and a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Deduct 120 from 127 and we're left with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 15

Let's proceed to step 4:
15 goes into 77 5 times with a remainder of 2.
Record the quotient 5 as the next digit in the result. 
Result so far: 385.0
Deduct 75 from 77 and we're left with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 15

Step 5:
28 divided by 15 is 1 with a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 3851.0
If we take 15 away from 28, we end up with 13.
Bring next digit (3) of the dividend behind the 13 and repeat the process: 133 / 15

Advancing to step 6:
The number 15 fits into 133 8 times, leaving a remainder of 13.
Record the quotient 8 as the next digit in the result. 
Result so far: 38518.0
Deduct 120 from 133 and we're left with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 15

Let's proceed to step 7:
15 can be fit into 137 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 385189.0
Subtract 135 from 137 to get 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 15

Going ahead to step 8:
15 goes into 22 1 times with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 3851891.0
Deduct 15 from 22 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 9:
70 divided by 15 is 4 with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 3851891.4
The remainder is 10 after subtracting 60 from 70.
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 10:
100 divided by 15 is 6 with a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 3851891.46
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.

On to step 11:
The number 15 fits into 100 6 times, leaving a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 3851891.466
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.

In conclusion, the division gives 3851891.466 with a balance of 0.001.