27700402 divided by 409 
The aim is to understand the frequency of 409 in 27700402.

Going ahead to step 1:
2 divided by 409 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 409

Moving on to step 2:
27 divided by 409 is 0 with a remainder of 27.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 27, we end up with 27.
Include the next digit (7) from the dividend after 27, then repeat: 277 / 409

Step 3:
When dividing 277 by 409, we get 0 with a remainder of 277.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 277, we get 277.
Append the next digit (0) from the dividend to 277 and continue with: 2770 / 409

On to step 4:
If we divide 2770 by 409, we get 6 and a remainder of 316.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 316 after subtracting 2454 from 2770.
Take the next digit (0) from the dividend and append it to 316, then repeat: 3160 / 409

Going ahead to step 5:
3160 divided by 409 is 7 with a remainder of 297.
Record the quotient 7 as the next digit in the result. 
Result so far: 67.0
Deduct 2863 from 3160 and we're left with 297.
Append the next digit (4) from the dividend to 297 and continue with: 2974 / 409

Moving on to step 6:
The number 409 fits into 2974 7 times, leaving a remainder of 111.
Write down 7 as next digit of the result. 
Result so far: 677.0
Deduct 2863 from 2974 and we're left with 111.
Grab the next digit (0) from the dividend, add it to 111, then carry on: 1110 / 409

Moving on to step 7:
1110 divided by 409 is 2 with a remainder of 292.
The number 2 becomes the next digit in our result. 
Result so far: 6772.0
If we subtract 818 from 1110, we get 292.
Append the next digit (2) from the dividend to 292 and continue with: 2922 / 409

Let's proceed to step 8:
When dividing 2922 by 409, we get 7 with a remainder of 59.
Record the quotient 7 as the next digit in the result. 
Result so far: 67727.0
If we take 2863 away from 2922, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 9:
When dividing 590 by 409, we get 1 with a remainder of 181.
Use 1 as the next digit of our solution. 
Result so far: 67727.1
Subtract 409 from 590 to get 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Moving on to step 10:
The number 409 fits into 1810 4 times, leaving a remainder of 174.
Use 4 as the next digit of our solution. 
Result so far: 67727.14
Deduct 1636 from 1810 and we're left with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Step 11:
409 goes into 1740 4 times with a remainder of 104.
The number 4 becomes the next digit in our result. 
Result so far: 67727.144
If we take 1636 away from 1740, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Our division results in 67727.144 with a remaining 0.0104.