We look at the division of 991234 by 709 
The aim is to understand the frequency of 709 in 991234.

Step 1:
The number 709 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 709

Moving on to step 2:
709 goes into 99 0 times with a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Append the next digit (1) from the dividend to 99 and continue with: 991 / 709

On to step 3:
When dividing 991 by 709, we get 1 with a remainder of 282.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 709 from 991 leaves us with 282.
Take the next digit (2) from the dividend and append it to 282, then repeat: 2822 / 709

Advancing to step 4:
The number 709 fits into 2822 3 times, leaving a remainder of 695.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we subtract 2127 from 2822, we get 695.
Fetch the next digit (3) from the dividend, attach it to 695 and continue: 6953 / 709

On to step 5:
709 can be fit into 6953 9 times, resulting in a remainder of 572.
The next digit of our result is 9. 
Result so far: 139.0
If we subtract 6381 from 6953, we get 572.
Append the next digit (4) from the dividend to 572 and continue with: 5724 / 709

Going ahead to step 6:
5724 divided by 709 is 8 with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 1398.0
If we take 5672 away from 5724, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 7:
The number 709 fits into 520 0 times, leaving a remainder of 520.
The next digit of our result is 0. 
Result so far: 1398.0
Subtract 0 from 520 to get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Let's proceed to step 8:
5200 divided by 709 is 7 with a remainder of 237.
The next digit of our result is 7. 
Result so far: 1398.07
Deduct 4963 from 5200 and we're left with 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Advancing to step 9:
The number 709 fits into 2370 3 times, leaving a remainder of 243.
Use 3 as the next digit of our solution. 
Result so far: 1398.073
Subtract 2127 from 2370 to get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Moving on to step 10:
709 can be fit into 2430 3 times, resulting in a remainder of 303.
Use 3 as the next digit of our solution. 
Result so far: 1398.0733
If we take 2127 away from 2430, we end up with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Our division results in 1398.0733 with a remaining 0.00303.