39441002 ÷ 999 
The aim is to understand the frequency of 999 in 39441002.

On to step 1:
The number 999 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 999

Step 2:
If we divide 39 by 999, we get 0 and a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Include the next digit (4) from the dividend after 39, then repeat: 394 / 999

Moving on to step 3:
When dividing 394 by 999, we get 0 with a remainder of 394.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 394 leaves us with 394.
Take the next digit (4) from the dividend and append it to 394, then repeat: 3944 / 999

Moving on to step 4:
999 goes into 3944 3 times with a remainder of 947.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 947 after subtracting 2997 from 3944.
Append the next digit (1) from the dividend to 947 and continue with: 9471 / 999

Advancing to step 5:
9471 divided by 999 is 9 with a remainder of 480.
Use 9 as the next digit of our solution. 
Result so far: 39.0
If we subtract 8991 from 9471, we get 480.
Fetch the next digit (0) from the dividend, attach it to 480 and continue: 4800 / 999

Step 6:
999 goes into 4800 4 times with a remainder of 804.
The number 4 becomes the next digit in our result. 
Result so far: 394.0
Subtract 3996 from 4800 to get 804.
Grab the next digit (0) from the dividend, add it to 804, then carry on: 8040 / 999

Step 7:
The number 999 fits into 8040 8 times, leaving a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 3948.0
If we subtract 7992 from 8040, we get 48.
Take the next digit (2) from the dividend and append it to 48, then repeat: 482 / 999

Moving on to step 8:
999 can be fit into 482 0 times, resulting in a remainder of 482.
Use 0 as the next digit of our solution. 
Result so far: 39480.0
If we take 0 away from 482, we end up with 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Going ahead to step 9:
999 goes into 4820 4 times with a remainder of 824.
Use 4 as the next digit of our solution. 
Result so far: 39480.4
The remainder is 824 after subtracting 3996 from 4820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Moving on to step 10:
If we divide 8240 by 999, we get 8 and a remainder of 248.
The next digit of our result is 8. 
Result so far: 39480.48
The remainder is 248 after subtracting 7992 from 8240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 11:
If we divide 2480 by 999, we get 2 and a remainder of 482.
Put 2 as the next digit of the answer. 
Result so far: 39480.482
Subtracting 1998 from 2480 leaves us with 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Let's proceed to step 12:
999 goes into 4820 4 times with a remainder of 824.
Use 4 as the next digit of our solution. 
Result so far: 39480.4824
If we take 3996 away from 4820, we end up with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

On to step 13:
If we divide 8240 by 999, we get 8 and a remainder of 248.
Use 8 as the next digit of our solution. 
Result so far: 39480.48248
Deduct 7992 from 8240 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 14:
999 goes into 2480 2 times with a remainder of 482.
The number 2 becomes the next digit in our result. 
Result so far: 39480.482482
The remainder is 482 after subtracting 1998 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Let's proceed to step 15:
If we divide 4820 by 999, we get 4 and a remainder of 824.
Put 4 as the next digit of the answer. 
Result so far: 39480.4824824
Deduct 3996 from 4820 and we're left with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Advancing to step 16:
The number 999 fits into 8240 8 times, leaving a remainder of 248.
Use 8 as the next digit of our solution. 
Result so far: 39480.48248248
Subtracting 7992 from 8240 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Our division results in 39480.48248248 with a remaining 2.48e-07.