We're dividing 58103540 by 409 
The aim is to understand the frequency of 409 in 58103540.

Moving on to step 1:
409 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 409

Moving on to step 2:
If we divide 58 by 409, we get 0 and a remainder of 58.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 58 and we're left with 58.
Grab the next digit (1) from the dividend, add it to 58, then carry on: 581 / 409

Going ahead to step 3:
The number 409 fits into 581 1 times, leaving a remainder of 172.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 172 after subtracting 409 from 581.
Grab the next digit (0) from the dividend, add it to 172, then carry on: 1720 / 409

Step 4:
409 can be fit into 1720 4 times, resulting in a remainder of 84.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 1636 from 1720 and we're left with 84.
Bring next digit (3) of the dividend behind the 84 and repeat the process: 843 / 409

Step 5:
409 goes into 843 2 times with a remainder of 25.
Write down 2 as next digit of the result. 
Result so far: 142.0
The remainder is 25 after subtracting 818 from 843.
Fetch the next digit (5) from the dividend, attach it to 25 and continue: 255 / 409

On to step 6:
If we divide 255 by 409, we get 0 and a remainder of 255.
Write down 0 as next digit of the result. 
Result so far: 1420.0
The remainder is 255 after subtracting 0 from 255.
Include the next digit (4) from the dividend after 255, then repeat: 2554 / 409

Going ahead to step 7:
2554 divided by 409 is 6 with a remainder of 100.
Put 6 as the next digit of the answer. 
Result so far: 14206.0
Deduct 2454 from 2554 and we're left with 100.
Grab the next digit (0) from the dividend, add it to 100, then carry on: 1000 / 409

Moving on to step 8:
The number 409 fits into 1000 2 times, leaving a remainder of 182.
The next digit of our result is 2. 
Result so far: 142062.0
If we subtract 818 from 1000, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Going ahead to step 9:
1820 divided by 409 is 4 with a remainder of 184.
The next digit of our result is 4. 
Result so far: 142062.4
If we take 1636 away from 1820, we end up with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 10:
If we divide 1840 by 409, we get 4 and a remainder of 204.
The next digit of our result is 4. 
Result so far: 142062.44
Subtracting 1636 from 1840 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

In conclusion, the division gives 142062.44 with a balance of 0.204.