Let's divide 738449 by 90
The aim is to understand the frequency of 90 in 738449.

Let's proceed to step 1:
90 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 90

Advancing to step 2:
If we divide 73 by 90, we get 0 and a remainder of 73.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 73 to get 73.
Bring next digit (8) of the dividend behind the 73 and repeat the process: 738 / 90

Moving on to step 3:
90 can be fit into 738 8 times, resulting in a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 720 from 738 to get 18.
Bring next digit (4) of the dividend behind the 18 and repeat the process: 184 / 90

Moving on to step 4:
The number 90 fits into 184 2 times, leaving a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 82.0
If we subtract 180 from 184, we get 4.
Take the next digit (4) from the dividend and append it to 4, then repeat: 44 / 90

Advancing to step 5:
The number 90 fits into 44 0 times, leaving a remainder of 44.
Write down 0 as next digit of the result. 
Result so far: 820.0
If we subtract 0 from 44, we get 44.
Grab the next digit (9) from the dividend, add it to 44, then carry on: 449 / 90

On to step 6:
90 goes into 449 4 times with a remainder of 89.
Put 4 as the next digit of the answer. 
Result so far: 8204.0
If we take 360 away from 449, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Advancing to step 7:
890 divided by 90 is 9 with a remainder of 80.
Write down 9 as next digit of the result. 
Result so far: 8204.9
If we subtract 810 from 890, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 8:
The number 90 fits into 800 8 times, leaving a remainder of 80.
The next digit of our result is 8. 
Result so far: 8204.98
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 9:
When dividing 800 by 90, we get 8 with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 8204.988
If we subtract 720 from 800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 8204.988 with a remainder of 0.008.