We're dividing 99612059 by 287 
The aim is to understand the frequency of 287 in 99612059.

Step 1:
The number 287 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 287

Advancing to step 2:
If we divide 99 by 287, we get 0 and a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Fetch the next digit (6) from the dividend, attach it to 99 and continue: 996 / 287

Going ahead to step 3:
If we divide 996 by 287, we get 3 and a remainder of 135.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 861 away from 996, we end up with 135.
Append the next digit (1) from the dividend to 135 and continue with: 1351 / 287

Step 4:
287 goes into 1351 4 times with a remainder of 203.
The next digit of our result is 4. 
Result so far: 34.0
Subtracting 1148 from 1351 leaves us with 203.
Take the next digit (2) from the dividend and append it to 203, then repeat: 2032 / 287

Going ahead to step 5:
When dividing 2032 by 287, we get 7 with a remainder of 23.
Use 7 as the next digit of our solution. 
Result so far: 347.0
If we subtract 2009 from 2032, we get 23.
Grab the next digit (0) from the dividend, add it to 23, then carry on: 230 / 287

Moving on to step 6:
The number 287 fits into 230 0 times, leaving a remainder of 230.
The next digit of our result is 0. 
Result so far: 3470.0
Subtract 0 from 230 to get 230.
Grab the next digit (5) from the dividend, add it to 230, then carry on: 2305 / 287

Step 7:
If we divide 2305 by 287, we get 8 and a remainder of 9.
The next digit of our result is 8. 
Result so far: 34708.0
If we take 2296 away from 2305, we end up with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 287

Going ahead to step 8:
If we divide 99 by 287, we get 0 and a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 347080.0
Subtract 0 from 99 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

On to step 9:
287 goes into 990 3 times with a remainder of 129.
Write down 3 as next digit of the result. 
Result so far: 347080.3
Deduct 861 from 990 and we're left with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Advancing to step 10:
287 goes into 1290 4 times with a remainder of 142.
The next digit of our result is 4. 
Result so far: 347080.34
Subtract 1148 from 1290 to get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Advancing to step 11:
1420 divided by 287 is 4 with a remainder of 272.
The number 4 becomes the next digit in our result. 
Result so far: 347080.344
Deduct 1148 from 1420 and we're left with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

After the division, we end up with 347080.344 and a remainder of 0.0272.