We divide 74386991 by 408
The aim is to understand the frequency of 408 in 74386991.

Going ahead to step 1:
408 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 408

Let's proceed to step 2:
74 divided by 408 is 0 with a remainder of 74.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 74 and we're left with 74.
Include the next digit (3) from the dividend after 74, then repeat: 743 / 408

On to step 3:
If we divide 743 by 408, we get 1 and a remainder of 335.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 408 away from 743, we end up with 335.
Fetch the next digit (8) from the dividend, attach it to 335 and continue: 3358 / 408

Going ahead to step 4:
The number 408 fits into 3358 8 times, leaving a remainder of 94.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
If we take 3264 away from 3358, we end up with 94.
Fetch the next digit (6) from the dividend, attach it to 94 and continue: 946 / 408

Step 5:
408 goes into 946 2 times with a remainder of 130.
The number 2 becomes the next digit in our result. 
Result so far: 182.0
Subtracting 816 from 946 leaves us with 130.
Grab the next digit (9) from the dividend, add it to 130, then carry on: 1309 / 408

Step 6:
408 goes into 1309 3 times with a remainder of 85.
Put 3 as the next digit of the answer. 
Result so far: 1823.0
If we take 1224 away from 1309, we end up with 85.
Take the next digit (9) from the dividend and append it to 85, then repeat: 859 / 408

Step 7:
408 can be fit into 859 2 times, resulting in a remainder of 43.
Use 2 as the next digit of our solution. 
Result so far: 18232.0
The remainder is 43 after subtracting 816 from 859.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 408

Moving on to step 8:
408 goes into 431 1 times with a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 182321.0
Subtracting 408 from 431 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 9:
If we divide 230 by 408, we get 0 and a remainder of 230.
Put 0 as the next digit of the answer. 
Result so far: 182321.0
The remainder is 230 after subtracting 0 from 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 10:
2300 divided by 408 is 5 with a remainder of 260.
Put 5 as the next digit of the answer. 
Result so far: 182321.05
Subtract 2040 from 2300 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 11:
If we divide 2600 by 408, we get 6 and a remainder of 152.
The number 6 becomes the next digit in our result. 
Result so far: 182321.056
Subtract 2448 from 2600 to get 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 12:
408 can be fit into 1520 3 times, resulting in a remainder of 296.
The next digit of our result is 3. 
Result so far: 182321.0563
Subtracting 1224 from 1520 leaves us with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Moving on to step 13:
If we divide 2960 by 408, we get 7 and a remainder of 104.
Record the quotient 7 as the next digit in the result. 
Result so far: 182321.05637
Subtract 2856 from 2960 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

On to step 14:
1040 divided by 408 is 2 with a remainder of 224.
The number 2 becomes the next digit in our result. 
Result so far: 182321.056372
If we subtract 816 from 1040, we get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Going ahead to step 15:
2240 divided by 408 is 5 with a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 182321.0563725
The remainder is 200 after subtracting 2040 from 2240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 16:
If we divide 2000 by 408, we get 4 and a remainder of 368.
Record the quotient 4 as the next digit in the result. 
Result so far: 182321.05637254
The remainder is 368 after subtracting 1632 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

The final outcome is 182321.05637254, with a leftover of 3.68e-07.