We look at the division of 98391721 by 944 
The aim is to understand the frequency of 944 in 98391721.

On to step 1:
944 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 944

Moving on to step 2:
When dividing 98 by 944, we get 0 with a remainder of 98.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 98 after subtracting 0 from 98.
Append the next digit (3) from the dividend to 98 and continue with: 983 / 944

On to step 3:
983 divided by 944 is 1 with a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 944 from 983, we get 39.
Fetch the next digit (9) from the dividend, attach it to 39 and continue: 399 / 944

Going ahead to step 4:
The number 944 fits into 399 0 times, leaving a remainder of 399.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 399 and we're left with 399.
Take the next digit (1) from the dividend and append it to 399, then repeat: 3991 / 944

Moving on to step 5:
944 can be fit into 3991 4 times, resulting in a remainder of 215.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
If we subtract 3776 from 3991, we get 215.
Bring next digit (7) of the dividend behind the 215 and repeat the process: 2157 / 944

Going ahead to step 6:
944 goes into 2157 2 times with a remainder of 269.
Record the quotient 2 as the next digit in the result. 
Result so far: 1042.0
Subtract 1888 from 2157 to get 269.
Bring next digit (2) of the dividend behind the 269 and repeat the process: 2692 / 944

Let's proceed to step 7:
2692 divided by 944 is 2 with a remainder of 804.
The next digit of our result is 2. 
Result so far: 10422.0
The remainder is 804 after subtracting 1888 from 2692.
Include the next digit (1) from the dividend after 804, then repeat: 8041 / 944

Going ahead to step 8:
When dividing 8041 by 944, we get 8 with a remainder of 489.
Use 8 as the next digit of our solution. 
Result so far: 104228.0
The remainder is 489 after subtracting 7552 from 8041.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4890, and continue the process.

Going ahead to step 9:
The number 944 fits into 4890 5 times, leaving a remainder of 170.
The next digit of our result is 5. 
Result so far: 104228.5
The remainder is 170 after subtracting 4720 from 4890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 10:
The number 944 fits into 1700 1 times, leaving a remainder of 756.
Record the quotient 1 as the next digit in the result. 
Result so far: 104228.51
Subtracting 944 from 1700 leaves us with 756.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7560, and continue the process.

On to step 11:
If we divide 7560 by 944, we get 8 and a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 104228.518
If we take 7552 away from 7560, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
80 divided by 944 is 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 104228.518
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 13:
944 can be fit into 800 0 times, resulting in a remainder of 800.
Write down 0 as next digit of the result. 
Result so far: 104228.518
Subtracting 0 from 800 leaves us with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

The final outcome is 104228.518, with a leftover of 0.0008.