We're dividing 681506 by 45 
The aim is to understand the frequency of 45 in 681506.

Let's proceed to step 1:
If we divide 6 by 45, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 45

Going ahead to step 2:
The number 45 fits into 68 1 times, leaving a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 23 after subtracting 45 from 68.
Take the next digit (1) from the dividend and append it to 23, then repeat: 231 / 45

Going ahead to step 3:
45 can be fit into 231 5 times, resulting in a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
The remainder is 6 after subtracting 225 from 231.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 45

Advancing to step 4:
The number 45 fits into 65 1 times, leaving a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 151.0
If we take 45 away from 65, we end up with 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 45

Going ahead to step 5:
The number 45 fits into 200 4 times, leaving a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 1514.0
The remainder is 20 after subtracting 180 from 200.
Fetch the next digit (6) from the dividend, attach it to 20 and continue: 206 / 45

Advancing to step 6:
206 divided by 45 is 4 with a remainder of 26.
The next digit of our result is 4. 
Result so far: 15144.0
If we subtract 180 from 206, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 7:
If we divide 260 by 45, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 15144.5
Deduct 225 from 260 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 8:
The number 45 fits into 350 7 times, leaving a remainder of 35.
The next digit of our result is 7. 
Result so far: 15144.57
The remainder is 35 after subtracting 315 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 9:
When dividing 350 by 45, we get 7 with a remainder of 35.
The next digit of our result is 7. 
Result so far: 15144.577
If we take 315 away from 350, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 15144.577, with a leftover of 0.0035.