43583683 ÷ 45 
The aim is to understand the frequency of 45 in 43583683.

On to step 1:
The number 45 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 45

Going ahead to step 2:
If we divide 43 by 45, we get 0 and a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Fetch the next digit (5) from the dividend, attach it to 43 and continue: 435 / 45

Let's proceed to step 3:
45 can be fit into 435 9 times, resulting in a remainder of 30.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtracting 405 from 435 leaves us with 30.
Append the next digit (8) from the dividend to 30 and continue with: 308 / 45

Going ahead to step 4:
308 divided by 45 is 6 with a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
Subtract 270 from 308 to get 38.
Fetch the next digit (3) from the dividend, attach it to 38 and continue: 383 / 45

On to step 5:
383 divided by 45 is 8 with a remainder of 23.
Write down 8 as next digit of the result. 
Result so far: 968.0
Subtracting 360 from 383 leaves us with 23.
Append the next digit (6) from the dividend to 23 and continue with: 236 / 45

Let's proceed to step 6:
If we divide 236 by 45, we get 5 and a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 9685.0
Subtract 225 from 236 to get 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 45

Step 7:
The number 45 fits into 118 2 times, leaving a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 96852.0
If we subtract 90 from 118, we get 28.
Include the next digit (3) from the dividend after 28, then repeat: 283 / 45

Advancing to step 8:
283 divided by 45 is 6 with a remainder of 13.
Write down 6 as next digit of the result. 
Result so far: 968526.0
If we take 270 away from 283, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 9:
130 divided by 45 is 2 with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 968526.2
The remainder is 40 after subtracting 90 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
45 goes into 400 8 times with a remainder of 40.
Use 8 as the next digit of our solution. 
Result so far: 968526.28
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
If we divide 400 by 45, we get 8 and a remainder of 40.
The number 8 becomes the next digit in our result. 
Result so far: 968526.288
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 968526.288, with a leftover of 0.004.