617726 ÷ 45 
The aim is to understand the frequency of 45 in 617726.

Step 1:
When dividing 6 by 45, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 45

Step 2:
45 goes into 61 1 times with a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 45 from 61 leaves us with 16.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 45

Step 3:
If we divide 167 by 45, we get 3 and a remainder of 32.
Write down 3 as next digit of the result. 
Result so far: 13.0
The remainder is 32 after subtracting 135 from 167.
Fetch the next digit (7) from the dividend, attach it to 32 and continue: 327 / 45

Going ahead to step 4:
45 can be fit into 327 7 times, resulting in a remainder of 12.
Use 7 as the next digit of our solution. 
Result so far: 137.0
If we take 315 away from 327, we end up with 12.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 45

On to step 5:
45 goes into 122 2 times with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 1372.0
The remainder is 32 after subtracting 90 from 122.
Append the next digit (6) from the dividend to 32 and continue with: 326 / 45

Step 6:
326 divided by 45 is 7 with a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 13727.0
Deduct 315 from 326 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 7:
45 goes into 110 2 times with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 13727.2
Deduct 90 from 110 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
When dividing 200 by 45, we get 4 with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 13727.24
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 9:
The number 45 fits into 200 4 times, leaving a remainder of 20.
The next digit of our result is 4. 
Result so far: 13727.244
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 13727.244, and the remainder is 0.002.