We divide 803673 by 45
The aim is to understand the frequency of 45 in 803673.

Let's proceed to step 1:
When dividing 8 by 45, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 45

Let's proceed to step 2:
The number 45 fits into 80 1 times, leaving a remainder of 35.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 45 from 80 and we're left with 35.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 45

Let's proceed to step 3:
45 can be fit into 353 7 times, resulting in a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Deduct 315 from 353 and we're left with 38.
Append the next digit (6) from the dividend to 38 and continue with: 386 / 45

Going ahead to step 4:
386 divided by 45 is 8 with a remainder of 26.
Use 8 as the next digit of our solution. 
Result so far: 178.0
Subtract 360 from 386 to get 26.
Grab the next digit (7) from the dividend, add it to 26, then carry on: 267 / 45

Going ahead to step 5:
45 goes into 267 5 times with a remainder of 42.
The number 5 becomes the next digit in our result. 
Result so far: 1785.0
Deduct 225 from 267 and we're left with 42.
Fetch the next digit (3) from the dividend, attach it to 42 and continue: 423 / 45

On to step 6:
45 goes into 423 9 times with a remainder of 18.
Record the quotient 9 as the next digit in the result. 
Result so far: 17859.0
Subtracting 405 from 423 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 7:
45 goes into 180 4 times with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 17859.4
If we subtract 180 from 180, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
45 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 17859.4
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
The number 45 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 17859.4
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 17859.4 and a remainder of 0.0.