9875143 divided by 981 
The aim is to understand the frequency of 981 in 9875143.

Let's proceed to step 1:
981 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 981

Step 2:
When dividing 98 by 981, we get 0 with a remainder of 98.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 98 and we're left with 98.
Bring next digit (7) of the dividend behind the 98 and repeat the process: 987 / 981

Step 3:
The number 981 fits into 987 1 times, leaving a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 981 away from 987, we end up with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 981

Advancing to step 4:
When dividing 65 by 981, we get 0 with a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 65 after subtracting 0 from 65.
Append the next digit (1) from the dividend to 65 and continue with: 651 / 981

Step 5:
981 goes into 651 0 times with a remainder of 651.
The next digit of our result is 0. 
Result so far: 100.0
Subtracting 0 from 651 leaves us with 651.
Fetch the next digit (4) from the dividend, attach it to 651 and continue: 6514 / 981

Going ahead to step 6:
When dividing 6514 by 981, we get 6 with a remainder of 628.
Use 6 as the next digit of our solution. 
Result so far: 1006.0
Deduct 5886 from 6514 and we're left with 628.
Fetch the next digit (3) from the dividend, attach it to 628 and continue: 6283 / 981

Step 7:
The number 981 fits into 6283 6 times, leaving a remainder of 397.
The number 6 becomes the next digit in our result. 
Result so far: 10066.0
Deduct 5886 from 6283 and we're left with 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

Going ahead to step 8:
981 goes into 3970 4 times with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 10066.4
If we take 3924 away from 3970, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 9:
981 goes into 460 0 times with a remainder of 460.
Record the quotient 0 as the next digit in the result. 
Result so far: 10066.4
Subtracting 0 from 460 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 10:
If we divide 4600 by 981, we get 4 and a remainder of 676.
The next digit of our result is 4. 
Result so far: 10066.404
Deduct 3924 from 4600 and we're left with 676.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6760, and continue the process.

Step 11:
The number 981 fits into 6760 6 times, leaving a remainder of 874.
Write down 6 as next digit of the result. 
Result so far: 10066.4046
The remainder is 874 after subtracting 5886 from 6760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8740, and continue the process.

Moving on to step 12:
If we divide 8740 by 981, we get 8 and a remainder of 892.
Record the quotient 8 as the next digit in the result. 
Result so far: 10066.40468
Subtracting 7848 from 8740 leaves us with 892.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8920, and continue the process.

Moving on to step 13:
981 can be fit into 8920 9 times, resulting in a remainder of 91.
Use 9 as the next digit of our solution. 
Result so far: 10066.404689
Subtract 8829 from 8920 to get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Step 14:
981 can be fit into 910 0 times, resulting in a remainder of 910.
The next digit of our result is 0. 
Result so far: 10066.404689
If we subtract 0 from 910, we get 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9100, and continue the process.

Going ahead to step 15:
The number 981 fits into 9100 9 times, leaving a remainder of 271.
The next digit of our result is 9. 
Result so far: 10066.40468909
Deduct 8829 from 9100 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Our division results in 10066.40468909 with a remaining 2.71e-07.