312883 divided by 45 
The aim is to understand the frequency of 45 in 312883.

Going ahead to step 1:
When dividing 3 by 45, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 45

On to step 2:
45 goes into 31 0 times with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Bring next digit (2) of the dividend behind the 31 and repeat the process: 312 / 45

Step 3:
When dividing 312 by 45, we get 6 with a remainder of 42.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 270 from 312, we get 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 45

On to step 4:
428 divided by 45 is 9 with a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 69.0
Subtract 405 from 428 to get 23.
Take the next digit (8) from the dividend and append it to 23, then repeat: 238 / 45

Step 5:
The number 45 fits into 238 5 times, leaving a remainder of 13.
The number 5 becomes the next digit in our result. 
Result so far: 695.0
Deduct 225 from 238 and we're left with 13.
Grab the next digit (3) from the dividend, add it to 13, then carry on: 133 / 45

On to step 6:
If we divide 133 by 45, we get 2 and a remainder of 43.
Record the quotient 2 as the next digit in the result. 
Result so far: 6952.0
Subtracting 90 from 133 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 7:
430 divided by 45 is 9 with a remainder of 25.
Write down 9 as next digit of the result. 
Result so far: 6952.9
Subtracting 405 from 430 leaves us with 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.
Record the quotient 5 as the next digit in the result. 
Result so far: 6952.95
If we take 225 away from 250, we end up with 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 9:
45 goes into 250 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 6952.955
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final outcome is 6952.955, with a leftover of 0.0025.