3399585 ÷ 845 
The aim is to understand the frequency of 845 in 3399585.

Step 1:
845 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 845

Step 2:
The number 845 fits into 33 0 times, leaving a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 33, we end up with 33.
Bring next digit (9) of the dividend behind the 33 and repeat the process: 339 / 845

Going ahead to step 3:
When dividing 339 by 845, we get 0 with a remainder of 339.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 339, we end up with 339.
Take the next digit (9) from the dividend and append it to 339, then repeat: 3399 / 845

Step 4:
If we divide 3399 by 845, we get 4 and a remainder of 19.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 3380 from 3399 leaves us with 19.
Append the next digit (5) from the dividend to 19 and continue with: 195 / 845

Moving on to step 5:
195 divided by 845 is 0 with a remainder of 195.
Put 0 as the next digit of the answer. 
Result so far: 40.0
The remainder is 195 after subtracting 0 from 195.
Grab the next digit (8) from the dividend, add it to 195, then carry on: 1958 / 845

Step 6:
The number 845 fits into 1958 2 times, leaving a remainder of 268.
Record the quotient 2 as the next digit in the result. 
Result so far: 402.0
Subtracting 1690 from 1958 leaves us with 268.
Append the next digit (5) from the dividend to 268 and continue with: 2685 / 845

Let's proceed to step 7:
The number 845 fits into 2685 3 times, leaving a remainder of 150.
Write down 3 as next digit of the result. 
Result so far: 4023.0
Subtracting 2535 from 2685 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 8:
845 goes into 1500 1 times with a remainder of 655.
Record the quotient 1 as the next digit in the result. 
Result so far: 4023.1
The remainder is 655 after subtracting 845 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Advancing to step 9:
6550 divided by 845 is 7 with a remainder of 635.
The number 7 becomes the next digit in our result. 
Result so far: 4023.17
Subtracting 5915 from 6550 leaves us with 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Advancing to step 10:
If we divide 6350 by 845, we get 7 and a remainder of 435.
The next digit of our result is 7. 
Result so far: 4023.177
If we take 5915 away from 6350, we end up with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

The final outcome is 4023.177, with a leftover of 0.0435.