We divide 98817985 by 409
The aim is to understand the frequency of 409 in 98817985.

Going ahead to step 1:
The number 409 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 409

On to step 2:
The number 409 fits into 98 0 times, leaving a remainder of 98.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 98 after subtracting 0 from 98.
Fetch the next digit (8) from the dividend, attach it to 98 and continue: 988 / 409

Advancing to step 3:
When dividing 988 by 409, we get 2 with a remainder of 170.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 170 after subtracting 818 from 988.
Fetch the next digit (1) from the dividend, attach it to 170 and continue: 1701 / 409

Let's proceed to step 4:
When dividing 1701 by 409, we get 4 with a remainder of 65.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Subtracting 1636 from 1701 leaves us with 65.
Take the next digit (7) from the dividend and append it to 65, then repeat: 657 / 409

Going ahead to step 5:
If we divide 657 by 409, we get 1 and a remainder of 248.
Record the quotient 1 as the next digit in the result. 
Result so far: 241.0
Subtracting 409 from 657 leaves us with 248.
Grab the next digit (9) from the dividend, add it to 248, then carry on: 2489 / 409

Step 6:
When dividing 2489 by 409, we get 6 with a remainder of 35.
Record the quotient 6 as the next digit in the result. 
Result so far: 2416.0
Subtract 2454 from 2489 to get 35.
Bring next digit (8) of the dividend behind the 35 and repeat the process: 358 / 409

Step 7:
When dividing 358 by 409, we get 0 with a remainder of 358.
The number 0 becomes the next digit in our result. 
Result so far: 24160.0
Deduct 0 from 358 and we're left with 358.
Grab the next digit (5) from the dividend, add it to 358, then carry on: 3585 / 409

On to step 8:
409 can be fit into 3585 8 times, resulting in a remainder of 313.
The number 8 becomes the next digit in our result. 
Result so far: 241608.0
The remainder is 313 after subtracting 3272 from 3585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Step 9:
3130 divided by 409 is 7 with a remainder of 267.
Write down 7 as next digit of the result. 
Result so far: 241608.7
The remainder is 267 after subtracting 2863 from 3130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Step 10:
The number 409 fits into 2670 6 times, leaving a remainder of 216.
Record the quotient 6 as the next digit in the result. 
Result so far: 241608.76
The remainder is 216 after subtracting 2454 from 2670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Moving on to step 11:
2160 divided by 409 is 5 with a remainder of 115.
Write down 5 as next digit of the result. 
Result so far: 241608.765
Subtracting 2045 from 2160 leaves us with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Step 12:
409 can be fit into 1150 2 times, resulting in a remainder of 332.
Put 2 as the next digit of the answer. 
Result so far: 241608.7652
Subtracting 818 from 1150 leaves us with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

On to step 13:
The number 409 fits into 3320 8 times, leaving a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 241608.76528
If we subtract 3272 from 3320, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 14:
480 divided by 409 is 1 with a remainder of 71.
The number 1 becomes the next digit in our result. 
Result so far: 241608.765281
If we take 409 away from 480, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 15:
If we divide 710 by 409, we get 1 and a remainder of 301.
Record the quotient 1 as the next digit in the result. 
Result so far: 241608.7652811
Subtracting 409 from 710 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

The final result is 241608.7652811 with a remainder of 3.01e-06.