We divide 61898288 by 409
The aim is to understand the frequency of 409 in 61898288.

Advancing to step 1:
409 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 409

Step 2:
The number 409 fits into 61 0 times, leaving a remainder of 61.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 61, we end up with 61.
Bring next digit (8) of the dividend behind the 61 and repeat the process: 618 / 409

Step 3:
If we divide 618 by 409, we get 1 and a remainder of 209.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 409 from 618, we get 209.
Fetch the next digit (9) from the dividend, attach it to 209 and continue: 2099 / 409

Let's proceed to step 4:
If we divide 2099 by 409, we get 5 and a remainder of 54.
Put 5 as the next digit of the answer. 
Result so far: 15.0
The remainder is 54 after subtracting 2045 from 2099.
Include the next digit (8) from the dividend after 54, then repeat: 548 / 409

On to step 5:
If we divide 548 by 409, we get 1 and a remainder of 139.
Use 1 as the next digit of our solution. 
Result so far: 151.0
Deduct 409 from 548 and we're left with 139.
Include the next digit (2) from the dividend after 139, then repeat: 1392 / 409

Going ahead to step 6:
409 can be fit into 1392 3 times, resulting in a remainder of 165.
The next digit of our result is 3. 
Result so far: 1513.0
Subtract 1227 from 1392 to get 165.
Grab the next digit (8) from the dividend, add it to 165, then carry on: 1658 / 409

Let's proceed to step 7:
409 can be fit into 1658 4 times, resulting in a remainder of 22.
The number 4 becomes the next digit in our result. 
Result so far: 15134.0
If we subtract 1636 from 1658, we get 22.
Grab the next digit (8) from the dividend, add it to 22, then carry on: 228 / 409

On to step 8:
When dividing 228 by 409, we get 0 with a remainder of 228.
The number 0 becomes the next digit in our result. 
Result so far: 151340.0
Deduct 0 from 228 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Going ahead to step 9:
409 goes into 2280 5 times with a remainder of 235.
Use 5 as the next digit of our solution. 
Result so far: 151340.5
The remainder is 235 after subtracting 2045 from 2280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 10:
409 can be fit into 2350 5 times, resulting in a remainder of 305.
Write down 5 as next digit of the result. 
Result so far: 151340.55
If we subtract 2045 from 2350, we get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

After the division, we end up with 151340.55 and a remainder of 0.305.