We're dividing 887999 by 45 
The aim is to understand the frequency of 45 in 887999.

Let's proceed to step 1:
45 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 45

Advancing to step 2:
If we divide 88 by 45, we get 1 and a remainder of 43.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 45 from 88, we get 43.
Fetch the next digit (7) from the dividend, attach it to 43 and continue: 437 / 45

Going ahead to step 3:
If we divide 437 by 45, we get 9 and a remainder of 32.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we take 405 away from 437, we end up with 32.
Append the next digit (9) from the dividend to 32 and continue with: 329 / 45

Moving on to step 4:
If we divide 329 by 45, we get 7 and a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 197.0
If we take 315 away from 329, we end up with 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 45

Moving on to step 5:
The number 45 fits into 149 3 times, leaving a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 1973.0
The remainder is 14 after subtracting 135 from 149.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 45

Moving on to step 6:
45 can be fit into 149 3 times, resulting in a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 19733.0
Deduct 135 from 149 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 7:
When dividing 140 by 45, we get 3 with a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 19733.3
Subtract 135 from 140 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.

Step 8:
45 goes into 50 1 times with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 19733.31
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.

Let's proceed to step 9:
If we divide 50 by 45, we get 1 and a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 19733.311
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 19733.311 and a remainder of 0.0005.