We divide 57645956 by 399
The aim is to understand the frequency of 399 in 57645956.

Let's proceed to step 1:
When dividing 5 by 399, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 399

On to step 2:
When dividing 57 by 399, we get 0 with a remainder of 57.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Include the next digit (6) from the dividend after 57, then repeat: 576 / 399

Going ahead to step 3:
399 goes into 576 1 times with a remainder of 177.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 399 from 576 to get 177.
Include the next digit (4) from the dividend after 177, then repeat: 1774 / 399

Advancing to step 4:
If we divide 1774 by 399, we get 4 and a remainder of 178.
Use 4 as the next digit of our solution. 
Result so far: 14.0
If we take 1596 away from 1774, we end up with 178.
Take the next digit (5) from the dividend and append it to 178, then repeat: 1785 / 399

Advancing to step 5:
1785 divided by 399 is 4 with a remainder of 189.
The next digit of our result is 4. 
Result so far: 144.0
If we subtract 1596 from 1785, we get 189.
Fetch the next digit (9) from the dividend, attach it to 189 and continue: 1899 / 399

On to step 6:
When dividing 1899 by 399, we get 4 with a remainder of 303.
Put 4 as the next digit of the answer. 
Result so far: 1444.0
If we take 1596 away from 1899, we end up with 303.
Append the next digit (5) from the dividend to 303 and continue with: 3035 / 399

Advancing to step 7:
3035 divided by 399 is 7 with a remainder of 242.
The number 7 becomes the next digit in our result. 
Result so far: 14447.0
Subtracting 2793 from 3035 leaves us with 242.
Take the next digit (6) from the dividend and append it to 242, then repeat: 2426 / 399

Let's proceed to step 8:
If we divide 2426 by 399, we get 6 and a remainder of 32.
The next digit of our result is 6. 
Result so far: 144476.0
Subtract 2394 from 2426 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
320 divided by 399 is 0 with a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 144476.0
The remainder is 320 after subtracting 0 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 10:
If we divide 3200 by 399, we get 8 and a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 144476.08
Subtracting 3192 from 3200 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 11:
The number 399 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 144476.08
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
The number 399 fits into 800 2 times, leaving a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 144476.0802
Subtracting 798 from 800 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 13:
When dividing 20 by 399, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 144476.0802
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
399 goes into 200 0 times with a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 144476.0802
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The quotient of the division is 144476.0802, and the remainder is 2e-05.