12816851 ÷ 998 
The aim is to understand the frequency of 998 in 12816851.

Advancing to step 1:
The number 998 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 998

Let's proceed to step 2:
998 goes into 12 0 times with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 998

Step 3:
998 goes into 128 0 times with a remainder of 128.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 128 to get 128.
Grab the next digit (1) from the dividend, add it to 128, then carry on: 1281 / 998

Going ahead to step 4:
998 goes into 1281 1 times with a remainder of 283.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 998 from 1281 leaves us with 283.
Bring next digit (6) of the dividend behind the 283 and repeat the process: 2836 / 998

Going ahead to step 5:
998 goes into 2836 2 times with a remainder of 840.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 1996 from 2836 leaves us with 840.
Grab the next digit (8) from the dividend, add it to 840, then carry on: 8408 / 998

Going ahead to step 6:
When dividing 8408 by 998, we get 8 with a remainder of 424.
Put 8 as the next digit of the answer. 
Result so far: 128.0
If we subtract 7984 from 8408, we get 424.
Grab the next digit (5) from the dividend, add it to 424, then carry on: 4245 / 998

Moving on to step 7:
The number 998 fits into 4245 4 times, leaving a remainder of 253.
Use 4 as the next digit of our solution. 
Result so far: 1284.0
Subtracting 3992 from 4245 leaves us with 253.
Fetch the next digit (1) from the dividend, attach it to 253 and continue: 2531 / 998

Let's proceed to step 8:
2531 divided by 998 is 2 with a remainder of 535.
The next digit of our result is 2. 
Result so far: 12842.0
Deduct 1996 from 2531 and we're left with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Step 9:
998 goes into 5350 5 times with a remainder of 360.
Put 5 as the next digit of the answer. 
Result so far: 12842.5
Subtract 4990 from 5350 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 10:
998 can be fit into 3600 3 times, resulting in a remainder of 606.
Use 3 as the next digit of our solution. 
Result so far: 12842.53
Deduct 2994 from 3600 and we're left with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Advancing to step 11:
If we divide 6060 by 998, we get 6 and a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 12842.536
If we subtract 5988 from 6060, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 12:
If we divide 720 by 998, we get 0 and a remainder of 720.
Record the quotient 0 as the next digit in the result. 
Result so far: 12842.536
Subtracting 0 from 720 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Advancing to step 13:
998 goes into 7200 7 times with a remainder of 214.
Record the quotient 7 as the next digit in the result. 
Result so far: 12842.53607
If we take 6986 away from 7200, we end up with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Step 14:
If we divide 2140 by 998, we get 2 and a remainder of 144.
The number 2 becomes the next digit in our result. 
Result so far: 12842.536072
The remainder is 144 after subtracting 1996 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Moving on to step 15:
When dividing 1440 by 998, we get 1 with a remainder of 442.
Use 1 as the next digit of our solution. 
Result so far: 12842.5360721
If we subtract 998 from 1440, we get 442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4420, and continue the process.

Advancing to step 16:
4420 divided by 998 is 4 with a remainder of 428.
Put 4 as the next digit of the answer. 
Result so far: 12842.53607214
If we subtract 3992 from 4420, we get 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

The final outcome is 12842.53607214, with a leftover of 4.28e-07.