Let's divide 748451 by 9
The aim is to understand the frequency of 9 in 748451.

Let's proceed to step 1:
9 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 9

Moving on to step 2:
9 can be fit into 74 8 times, resulting in a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 2 after subtracting 72 from 74.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 9

Moving on to step 3:
9 goes into 28 3 times with a remainder of 1.
The next digit of our result is 3. 
Result so far: 83.0
If we subtract 27 from 28, we get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 9

Advancing to step 4:
14 divided by 9 is 1 with a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 831.0
Subtracting 9 from 14 leaves us with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 9

Advancing to step 5:
9 goes into 55 6 times with a remainder of 1.
The next digit of our result is 6. 
Result so far: 8316.0
If we subtract 54 from 55, we get 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 9

Advancing to step 6:
11 divided by 9 is 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 83161.0
If we take 9 away from 11, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
9 goes into 20 2 times with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 83161.2
Deduct 18 from 20 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 8:
The number 9 fits into 20 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 83161.22
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 83161.22 with a remaining 0.002.