905951 divided by 45 
The aim is to understand the frequency of 45 in 905951.

Going ahead to step 1:
The number 45 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 45

Going ahead to step 2:
90 divided by 45 is 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 90 away from 90, we end up with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 45

Let's proceed to step 3:
If we divide 5 by 45, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 20.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (9) from the dividend after 5, then repeat: 59 / 45

Let's proceed to step 4:
59 divided by 45 is 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 201.0
Subtract 45 from 59 to get 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 45

On to step 5:
When dividing 145 by 45, we get 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 2013.0
If we take 135 away from 145, we end up with 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 45

On to step 6:
If we divide 101 by 45, we get 2 and a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 20132.0
If we subtract 90 from 101, we get 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:
When dividing 110 by 45, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 20132.2
If we subtract 90 from 110, 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.

Going ahead to step 8:
The number 45 fits into 200 4 times, leaving a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 20132.24
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.

Moving on to step 9:
When dividing 200 by 45, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 20132.244
Subtract 180 from 200 to 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 final result is 20132.244 with a remainder of 0.002.