810077 ÷ 45 
The aim is to understand the frequency of 45 in 810077.

Going ahead to step 1:
When dividing 8 by 45, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 45

Advancing to step 2:
45 goes into 81 1 times with a remainder of 36.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 45 from 81 to get 36.
Append the next digit (0) from the dividend to 36 and continue with: 360 / 45

Moving on to step 3:
If we divide 360 by 45, we get 8 and a remainder of 0.
The next digit of our result is 8. 
Result so far: 18.0
Deduct 360 from 360 and we're left with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 45

On to step 4:
0 divided by 45 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 180.0
If we subtract 0 from 0, we get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 45

Going ahead to step 5:
If we divide 7 by 45, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 1800.0
If we subtract 0 from 7, we get 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 45

Advancing to step 6:
45 can be fit into 77 1 times, resulting in a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 18001.0
The remainder is 32 after subtracting 45 from 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 7:
45 goes into 320 7 times with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 18001.7
Subtract 315 from 320 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
45 can be fit into 50 1 times, resulting in a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 18001.71
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
The number 45 fits into 50 1 times, leaving a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 18001.711
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 18001.711 with a remaining 0.0005.