Let's divide 21001187 by 959
The aim is to understand the frequency of 959 in 21001187.

Going ahead to step 1:
959 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 959

Let's proceed to step 2:
959 goes into 21 0 times with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (0) from the dividend, attach it to 21 and continue: 210 / 959

Going ahead to step 3:
959 goes into 210 0 times with a remainder of 210.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 210 and we're left with 210.
Append the next digit (0) from the dividend to 210 and continue with: 2100 / 959

On to step 4:
The number 959 fits into 2100 2 times, leaving a remainder of 182.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1918 from 2100 leaves us with 182.
Fetch the next digit (1) from the dividend, attach it to 182 and continue: 1821 / 959

Step 5:
The number 959 fits into 1821 1 times, leaving a remainder of 862.
Use 1 as the next digit of our solution. 
Result so far: 21.0
If we take 959 away from 1821, we end up with 862.
Include the next digit (1) from the dividend after 862, then repeat: 8621 / 959

On to step 6:
8621 divided by 959 is 8 with a remainder of 949.
Record the quotient 8 as the next digit in the result. 
Result so far: 218.0
Subtracting 7672 from 8621 leaves us with 949.
Fetch the next digit (8) from the dividend, attach it to 949 and continue: 9498 / 959

Let's proceed to step 7:
If we divide 9498 by 959, we get 9 and a remainder of 867.
Write down 9 as next digit of the result. 
Result so far: 2189.0
If we take 8631 away from 9498, we end up with 867.
Fetch the next digit (7) from the dividend, attach it to 867 and continue: 8677 / 959

Moving on to step 8:
If we divide 8677 by 959, we get 9 and a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 21899.0
Deduct 8631 from 8677 and we're left 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.

Let's proceed to step 9:
If we divide 460 by 959, we get 0 and a remainder of 460.
Record the quotient 0 as the next digit in the result. 
Result so far: 21899.0
If we subtract 0 from 460, we get 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 959, we get 4 and a remainder of 764.
The next digit of our result is 4. 
Result so far: 21899.04
Subtract 3836 from 4600 to get 764.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7640, and continue the process.

Moving on to step 11:
7640 divided by 959 is 7 with a remainder of 927.
The number 7 becomes the next digit in our result. 
Result so far: 21899.047
Subtracting 6713 from 7640 leaves us with 927.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9270, and continue the process.

On to step 12:
9270 divided by 959 is 9 with a remainder of 639.
Use 9 as the next digit of our solution. 
Result so far: 21899.0479
Subtracting 8631 from 9270 leaves us with 639.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6390, and continue the process.

Let's proceed to step 13:
When dividing 6390 by 959, we get 6 with a remainder of 636.
The next digit of our result is 6. 
Result so far: 21899.04796
If we subtract 5754 from 6390, we get 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Advancing to step 14:
The number 959 fits into 6360 6 times, leaving a remainder of 606.
The number 6 becomes the next digit in our result. 
Result so far: 21899.047966
Deduct 5754 from 6360 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.

The final result is 21899.047966 with a remainder of 6.06e-05.