726906 ÷ 90 
The aim is to understand the frequency of 90 in 726906.

Moving on to step 1:
The number 90 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 90

Going ahead to step 2:
90 goes into 72 0 times with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Bring next digit (6) of the dividend behind the 72 and repeat the process: 726 / 90

On to step 3:
90 goes into 726 8 times with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 720 from 726 and we're left with 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 90

Going ahead to step 4:
If we divide 69 by 90, we get 0 and a remainder of 69.
Put 0 as the next digit of the answer. 
Result so far: 80.0
The remainder is 69 after subtracting 0 from 69.
Fetch the next digit (0) from the dividend, attach it to 69 and continue: 690 / 90

Advancing to step 5:
The number 90 fits into 690 7 times, leaving a remainder of 60.
The next digit of our result is 7. 
Result so far: 807.0
If we take 630 away from 690, we end up with 60.
Append the next digit (6) from the dividend to 60 and continue with: 606 / 90

Advancing to step 6:
The number 90 fits into 606 6 times, leaving a remainder of 66.
Write down 6 as next digit of the result. 
Result so far: 8076.0
If we subtract 540 from 606, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 7:
If we divide 660 by 90, we get 7 and a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 8076.7
If we take 630 away from 660, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 8:
90 goes into 300 3 times with a remainder of 30.
The next digit of our result is 3. 
Result so far: 8076.73
If we take 270 away from 300, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 9:
90 goes into 300 3 times with a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 8076.733
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

After the division, we end up with 8076.733 and a remainder of 0.003.