We look at the division of 73018495 by 408 
The aim is to understand the frequency of 408 in 73018495.

Step 1:
408 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 408

Going ahead to step 2:
When dividing 73 by 408, we get 0 with a remainder of 73.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Fetch the next digit (0) from the dividend, attach it to 73 and continue: 730 / 408

Going ahead to step 3:
408 can be fit into 730 1 times, resulting in a remainder of 322.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 408 away from 730, we end up with 322.
Bring next digit (1) of the dividend behind the 322 and repeat the process: 3221 / 408

Moving on to step 4:
If we divide 3221 by 408, we get 7 and a remainder of 365.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 365 after subtracting 2856 from 3221.
Fetch the next digit (8) from the dividend, attach it to 365 and continue: 3658 / 408

Let's proceed to step 5:
If we divide 3658 by 408, we get 8 and a remainder of 394.
The next digit of our result is 8. 
Result so far: 178.0
Subtracting 3264 from 3658 leaves us with 394.
Bring next digit (4) of the dividend behind the 394 and repeat the process: 3944 / 408

Step 6:
If we divide 3944 by 408, we get 9 and a remainder of 272.
Put 9 as the next digit of the answer. 
Result so far: 1789.0
Deduct 3672 from 3944 and we're left with 272.
Bring next digit (9) of the dividend behind the 272 and repeat the process: 2729 / 408

On to step 7:
When dividing 2729 by 408, we get 6 with a remainder of 281.
The next digit of our result is 6. 
Result so far: 17896.0
If we subtract 2448 from 2729, we get 281.
Append the next digit (5) from the dividend to 281 and continue with: 2815 / 408

Going ahead to step 8:
408 goes into 2815 6 times with a remainder of 367.
Put 6 as the next digit of the answer. 
Result so far: 178966.0
Deduct 2448 from 2815 and we're left with 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Moving on to step 9:
When dividing 3670 by 408, we get 8 with a remainder of 406.
Write down 8 as next digit of the result. 
Result so far: 178966.8
The remainder is 406 after subtracting 3264 from 3670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Let's proceed to step 10:
408 goes into 4060 9 times with a remainder of 388.
The next digit of our result is 9. 
Result so far: 178966.89
Deduct 3672 from 4060 and we're left with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Step 11:
When dividing 3880 by 408, we get 9 with a remainder of 208.
Put 9 as the next digit of the answer. 
Result so far: 178966.899
The remainder is 208 after subtracting 3672 from 3880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

The quotient of the division is 178966.899, and the remainder is 0.0208.