We look at the division of 17338309 by 374 
The aim is to understand the frequency of 374 in 17338309.

On to step 1:
When dividing 1 by 374, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 374

Let's proceed to step 2:
When dividing 17 by 374, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 374

Moving on to step 3:
When dividing 173 by 374, we get 0 with a remainder of 173.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 173 and we're left with 173.
Include the next digit (3) from the dividend after 173, then repeat: 1733 / 374

Going ahead to step 4:
The number 374 fits into 1733 4 times, leaving a remainder of 237.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 1496 from 1733 and we're left with 237.
Bring next digit (8) of the dividend behind the 237 and repeat the process: 2378 / 374

Advancing to step 5:
374 goes into 2378 6 times with a remainder of 134.
Write down 6 as next digit of the result. 
Result so far: 46.0
If we subtract 2244 from 2378, we get 134.
Grab the next digit (3) from the dividend, add it to 134, then carry on: 1343 / 374

On to step 6:
If we divide 1343 by 374, we get 3 and a remainder of 221.
Use 3 as the next digit of our solution. 
Result so far: 463.0
Subtract 1122 from 1343 to get 221.
Fetch the next digit (0) from the dividend, attach it to 221 and continue: 2210 / 374

On to step 7:
When dividing 2210 by 374, we get 5 with a remainder of 340.
The next digit of our result is 5. 
Result so far: 4635.0
If we take 1870 away from 2210, we end up with 340.
Include the next digit (9) from the dividend after 340, then repeat: 3409 / 374

Moving on to step 8:
3409 divided by 374 is 9 with a remainder of 43.
Use 9 as the next digit of our solution. 
Result so far: 46359.0
The remainder is 43 after subtracting 3366 from 3409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 9:
374 goes into 430 1 times with a remainder of 56.
Use 1 as the next digit of our solution. 
Result so far: 46359.1
Deduct 374 from 430 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 10:
The number 374 fits into 560 1 times, leaving a remainder of 186.
Use 1 as the next digit of our solution. 
Result so far: 46359.11
If we subtract 374 from 560, we get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

The final outcome is 46359.11, with a leftover of 0.186.