Let's divide 56487908 by 408
The aim is to understand the frequency of 408 in 56487908.

Let's proceed to step 1:
If we divide 5 by 408, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 408

Advancing to step 2:
408 goes into 56 0 times with a remainder of 56.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 56 leaves us with 56.
Grab the next digit (4) from the dividend, add it to 56, then carry on: 564 / 408

Step 3:
564 divided by 408 is 1 with a remainder of 156.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 156 after subtracting 408 from 564.
Grab the next digit (8) from the dividend, add it to 156, then carry on: 1568 / 408

Moving on to step 4:
If we divide 1568 by 408, we get 3 and a remainder of 344.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 344 after subtracting 1224 from 1568.
Fetch the next digit (7) from the dividend, attach it to 344 and continue: 3447 / 408

Let's proceed to step 5:
When dividing 3447 by 408, we get 8 with a remainder of 183.
The number 8 becomes the next digit in our result. 
Result so far: 138.0
If we subtract 3264 from 3447, we get 183.
Take the next digit (9) from the dividend and append it to 183, then repeat: 1839 / 408

Moving on to step 6:
408 goes into 1839 4 times with a remainder of 207.
Use 4 as the next digit of our solution. 
Result so far: 1384.0
The remainder is 207 after subtracting 1632 from 1839.
Bring next digit (0) of the dividend behind the 207 and repeat the process: 2070 / 408

On to step 7:
2070 divided by 408 is 5 with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 13845.0
Subtract 2040 from 2070 to get 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 408

Let's proceed to step 8:
408 can be fit into 308 0 times, resulting in a remainder of 308.
Record the quotient 0 as the next digit in the result. 
Result so far: 138450.0
Subtract 0 from 308 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 9:
3080 divided by 408 is 7 with a remainder of 224.
Record the quotient 7 as the next digit in the result. 
Result so far: 138450.7
If we take 2856 away from 3080, we end up with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

On to step 10:
408 goes into 2240 5 times with a remainder of 200.
Write down 5 as next digit of the result. 
Result so far: 138450.75
If we subtract 2040 from 2240, we 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.

Step 11:
408 goes into 2000 4 times with a remainder of 368.
Record the quotient 4 as the next digit in the result. 
Result so far: 138450.754
Subtracting 1632 from 2000 leaves us with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Going ahead to step 12:
408 can be fit into 3680 9 times, resulting in a remainder of 8.
The next digit of our result is 9. 
Result so far: 138450.7549
If we take 3672 away from 3680, we end up 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 13:
If we divide 80 by 408, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 138450.7549
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.

Let's proceed to step 14:
When dividing 800 by 408, we get 1 with a remainder of 392.
The number 1 becomes the next digit in our result. 
Result so far: 138450.754901
Subtract 408 from 800 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 15:
If we divide 3920 by 408, we get 9 and a remainder of 248.
The number 9 becomes the next digit in our result. 
Result so far: 138450.7549019
If we take 3672 away from 3920, we end up with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 16:
408 goes into 2480 6 times with a remainder of 32.
The next digit of our result is 6. 
Result so far: 138450.75490196
If we take 2448 away from 2480, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 138450.75490196, with a leftover of 3.2e-08.