691036 ÷ 45 
The aim is to understand the frequency of 45 in 691036.

Moving on to step 1:
6 divided by 45 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 45

Step 2:
69 divided by 45 is 1 with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 45 away from 69, we end up with 24.
Bring next digit (1) of the dividend behind the 24 and repeat the process: 241 / 45

Let's proceed to step 3:
If we divide 241 by 45, we get 5 and a remainder of 16.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 225 from 241, we get 16.
Grab the next digit (0) from the dividend, add it to 16, then carry on: 160 / 45

Moving on to step 4:
45 can be fit into 160 3 times, resulting in a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 153.0
If we subtract 135 from 160, we get 25.
Include the next digit (3) from the dividend after 25, then repeat: 253 / 45

On to step 5:
45 goes into 253 5 times with a remainder of 28.
The number 5 becomes the next digit in our result. 
Result so far: 1535.0
The remainder is 28 after subtracting 225 from 253.
Grab the next digit (6) from the dividend, add it to 28, then carry on: 286 / 45

Let's proceed to step 6:
45 can be fit into 286 6 times, resulting in a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 15356.0
If we subtract 270 from 286, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
When dividing 160 by 45, we get 3 with a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 15356.3
Subtract 135 from 160 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 8:
250 divided by 45 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 15356.35
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
The number 45 fits into 250 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 15356.355
Subtract 225 from 250 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Our division results in 15356.355 with a remaining 0.0025.