60748447 divided by 409 
The aim is to understand the frequency of 409 in 60748447.

On to step 1:
When dividing 6 by 409, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 409

Step 2:
When dividing 60 by 409, we get 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 60 leaves us with 60.
Bring next digit (7) of the dividend behind the 60 and repeat the process: 607 / 409

Moving on to step 3:
409 goes into 607 1 times with a remainder of 198.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 409 from 607 to get 198.
Include the next digit (4) from the dividend after 198, then repeat: 1984 / 409

Step 4:
If we divide 1984 by 409, we get 4 and a remainder of 348.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 1636 from 1984, we get 348.
Take the next digit (8) from the dividend and append it to 348, then repeat: 3488 / 409

On to step 5:
409 goes into 3488 8 times with a remainder of 216.
Write down 8 as next digit of the result. 
Result so far: 148.0
The remainder is 216 after subtracting 3272 from 3488.
Bring next digit (4) of the dividend behind the 216 and repeat the process: 2164 / 409

Going ahead to step 6:
409 can be fit into 2164 5 times, resulting in a remainder of 119.
Write down 5 as next digit of the result. 
Result so far: 1485.0
Deduct 2045 from 2164 and we're left with 119.
Append the next digit (4) from the dividend to 119 and continue with: 1194 / 409

Advancing to step 7:
409 can be fit into 1194 2 times, resulting in a remainder of 376.
The number 2 becomes the next digit in our result. 
Result so far: 14852.0
If we take 818 away from 1194, we end up with 376.
Bring next digit (7) of the dividend behind the 376 and repeat the process: 3767 / 409

Moving on to step 8:
409 goes into 3767 9 times with a remainder of 86.
The next digit of our result is 9. 
Result so far: 148529.0
Deduct 3681 from 3767 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 9:
860 divided by 409 is 2 with a remainder of 42.
The next digit of our result is 2. 
Result so far: 148529.2
If we take 818 away from 860, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 10:
420 divided by 409 is 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 148529.21
If we take 409 away from 420, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 11:
409 goes into 110 0 times with a remainder of 110.
Use 0 as the next digit of our solution. 
Result so far: 148529.21
Deduct 0 from 110 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 12:
The number 409 fits into 1100 2 times, leaving a remainder of 282.
Record the quotient 2 as the next digit in the result. 
Result so far: 148529.2102
If we subtract 818 from 1100, we get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Advancing to step 13:
When dividing 2820 by 409, we get 6 with a remainder of 366.
Record the quotient 6 as the next digit in the result. 
Result so far: 148529.21026
If we take 2454 away from 2820, we end up with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Let's proceed to step 14:
When dividing 3660 by 409, we get 8 with a remainder of 388.
Write down 8 as next digit of the result. 
Result so far: 148529.210268
Subtracting 3272 from 3660 leaves us 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.

Moving on to step 15:
3880 divided by 409 is 9 with a remainder of 199.
The number 9 becomes the next digit in our result. 
Result so far: 148529.2102689
The remainder is 199 after subtracting 3681 from 3880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

On to step 16:
409 goes into 1990 4 times with a remainder of 354.
The next digit of our result is 4. 
Result so far: 148529.21026894
If we take 1636 away from 1990, we end up with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

After the division, we end up with 148529.21026894 and a remainder of 3.54e-07.