Let's divide 63552011 by 408
The aim is to understand the frequency of 408 in 63552011.

Moving on to step 1:
If we divide 6 by 408, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 408

Let's proceed to step 2:
When dividing 63 by 408, we get 0 with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 63 leaves us with 63.
Append the next digit (5) from the dividend to 63 and continue with: 635 / 408

On to step 3:
The number 408 fits into 635 1 times, leaving a remainder of 227.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 227 after subtracting 408 from 635.
Append the next digit (5) from the dividend to 227 and continue with: 2275 / 408

Moving on to step 4:
If we divide 2275 by 408, we get 5 and a remainder of 235.
Write down 5 as next digit of the result. 
Result so far: 15.0
Deduct 2040 from 2275 and we're left with 235.
Take the next digit (2) from the dividend and append it to 235, then repeat: 2352 / 408

Going ahead to step 5:
408 goes into 2352 5 times with a remainder of 312.
The next digit of our result is 5. 
Result so far: 155.0
Subtract 2040 from 2352 to get 312.
Include the next digit (0) from the dividend after 312, then repeat: 3120 / 408

On to step 6:
When dividing 3120 by 408, we get 7 with a remainder of 264.
Put 7 as the next digit of the answer. 
Result so far: 1557.0
If we subtract 2856 from 3120, we get 264.
Append the next digit (1) from the dividend to 264 and continue with: 2641 / 408

Step 7:
408 goes into 2641 6 times with a remainder of 193.
Put 6 as the next digit of the answer. 
Result so far: 15576.0
Subtract 2448 from 2641 to get 193.
Append the next digit (1) from the dividend to 193 and continue with: 1931 / 408

On to step 8:
408 goes into 1931 4 times with a remainder of 299.
Use 4 as the next digit of our solution. 
Result so far: 155764.0
Subtracting 1632 from 1931 leaves us with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Going ahead to step 9:
408 can be fit into 2990 7 times, resulting in a remainder of 134.
The next digit of our result is 7. 
Result so far: 155764.7
If we take 2856 away from 2990, we end up with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 10:
If we divide 1340 by 408, we get 3 and a remainder of 116.
Put 3 as the next digit of the answer. 
Result so far: 155764.73
Subtracting 1224 from 1340 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 11:
408 can be fit into 1160 2 times, resulting in a remainder of 344.
Record the quotient 2 as the next digit in the result. 
Result so far: 155764.732
Subtracting 816 from 1160 leaves us with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Advancing to step 12:
When dividing 3440 by 408, we get 8 with a remainder of 176.
The number 8 becomes the next digit in our result. 
Result so far: 155764.7328
Subtract 3264 from 3440 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

On to step 13:
1760 divided by 408 is 4 with a remainder of 128.
Record the quotient 4 as the next digit in the result. 
Result so far: 155764.73284
Deduct 1632 from 1760 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 14:
If we divide 1280 by 408, we get 3 and a remainder of 56.
The next digit of our result is 3. 
Result so far: 155764.732843
Deduct 1224 from 1280 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 15:
408 goes into 560 1 times with a remainder of 152.
Write down 1 as next digit of the result. 
Result so far: 155764.7328431
If we take 408 away from 560, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

On to step 16:
408 can be fit into 1520 3 times, resulting in a remainder of 296.
Record the quotient 3 as the next digit in the result. 
Result so far: 155764.73284313
Subtract 1224 from 1520 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

The final outcome is 155764.73284313, with a leftover of 2.96e-07.