43122309 divided by 443 
The aim is to understand the frequency of 443 in 43122309.

Step 1:
When dividing 4 by 443, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 443

Advancing to step 2:
443 can be fit into 43 0 times, resulting in a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Include the next digit (1) from the dividend after 43, then repeat: 431 / 443

Step 3:
431 divided by 443 is 0 with a remainder of 431.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 431, we end up with 431.
Append the next digit (2) from the dividend to 431 and continue with: 4312 / 443

On to step 4:
443 goes into 4312 9 times with a remainder of 325.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 3987 away from 4312, we end up with 325.
Include the next digit (2) from the dividend after 325, then repeat: 3252 / 443

Let's proceed to step 5:
When dividing 3252 by 443, we get 7 with a remainder of 151.
Record the quotient 7 as the next digit in the result. 
Result so far: 97.0
The remainder is 151 after subtracting 3101 from 3252.
Fetch the next digit (3) from the dividend, attach it to 151 and continue: 1513 / 443

Going ahead to step 6:
443 can be fit into 1513 3 times, resulting in a remainder of 184.
Put 3 as the next digit of the answer. 
Result so far: 973.0
The remainder is 184 after subtracting 1329 from 1513.
Include the next digit (0) from the dividend after 184, then repeat: 1840 / 443

Moving on to step 7:
The number 443 fits into 1840 4 times, leaving a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 9734.0
If we take 1772 away from 1840, we end up with 68.
Grab the next digit (9) from the dividend, add it to 68, then carry on: 689 / 443

Going ahead to step 8:
If we divide 689 by 443, we get 1 and a remainder of 246.
The number 1 becomes the next digit in our result. 
Result so far: 97341.0
Deduct 443 from 689 and we're left with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Let's proceed to step 9:
If we divide 2460 by 443, we get 5 and a remainder of 245.
Use 5 as the next digit of our solution. 
Result so far: 97341.5
Subtract 2215 from 2460 to get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Going ahead to step 10:
When dividing 2450 by 443, we get 5 with a remainder of 235.
Write down 5 as next digit of the result. 
Result so far: 97341.55
The remainder is 235 after subtracting 2215 from 2450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

The final result is 97341.55 with a remainder of 0.235.