We divide 75136363 by 999
The aim is to understand the frequency of 999 in 75136363.

Going ahead to step 1:
If we divide 7 by 999, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 999

Advancing to step 2:
When dividing 75 by 999, we get 0 with a remainder of 75.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 75 and we're left with 75.
Include the next digit (1) from the dividend after 75, then repeat: 751 / 999

Going ahead to step 3:
When dividing 751 by 999, we get 0 with a remainder of 751.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 751, we end up with 751.
Fetch the next digit (3) from the dividend, attach it to 751 and continue: 7513 / 999

On to step 4:
999 can be fit into 7513 7 times, resulting in a remainder of 520.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 6993 from 7513 and we're left with 520.
Append the next digit (6) from the dividend to 520 and continue with: 5206 / 999

Step 5:
999 goes into 5206 5 times with a remainder of 211.
The next digit of our result is 5. 
Result so far: 75.0
Subtracting 4995 from 5206 leaves us with 211.
Append the next digit (3) from the dividend to 211 and continue with: 2113 / 999

Let's proceed to step 6:
2113 divided by 999 is 2 with a remainder of 115.
The number 2 becomes the next digit in our result. 
Result so far: 752.0
Deduct 1998 from 2113 and we're left with 115.
Append the next digit (6) from the dividend to 115 and continue with: 1156 / 999

Going ahead to step 7:
1156 divided by 999 is 1 with a remainder of 157.
The number 1 becomes the next digit in our result. 
Result so far: 7521.0
If we take 999 away from 1156, we end up with 157.
Append the next digit (3) from the dividend to 157 and continue with: 1573 / 999

Step 8:
If we divide 1573 by 999, we get 1 and a remainder of 574.
Write down 1 as next digit of the result. 
Result so far: 75211.0
If we take 999 away from 1573, we end up with 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Moving on to step 9:
If we divide 5740 by 999, we get 5 and a remainder of 745.
Put 5 as the next digit of the answer. 
Result so far: 75211.5
Subtract 4995 from 5740 to get 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Advancing to step 10:
7450 divided by 999 is 7 with a remainder of 457.
Put 7 as the next digit of the answer. 
Result so far: 75211.57
Subtracting 6993 from 7450 leaves us with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Step 11:
The number 999 fits into 4570 4 times, leaving a remainder of 574.
The number 4 becomes the next digit in our result. 
Result so far: 75211.574
Subtracting 3996 from 4570 leaves us with 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Moving on to step 12:
If we divide 5740 by 999, we get 5 and a remainder of 745.
Use 5 as the next digit of our solution. 
Result so far: 75211.5745
Subtracting 4995 from 5740 leaves us with 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Moving on to step 13:
The number 999 fits into 7450 7 times, leaving a remainder of 457.
Use 7 as the next digit of our solution. 
Result so far: 75211.57457
Subtract 6993 from 7450 to get 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Going ahead to step 14:
The number 999 fits into 4570 4 times, leaving a remainder of 574.
The next digit of our result is 4. 
Result so far: 75211.574574
If we take 3996 away from 4570, we end up with 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

On to step 15:
The number 999 fits into 5740 5 times, leaving a remainder of 745.
Use 5 as the next digit of our solution. 
Result so far: 75211.5745745
Subtract 4995 from 5740 to get 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Going ahead to step 16:
999 goes into 7450 7 times with a remainder of 457.
Use 7 as the next digit of our solution. 
Result so far: 75211.57457457
If we subtract 6993 from 7450, we get 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

After the division, we end up with 75211.57457457 and a remainder of 4.57e-07.