620462 divided by 90 
The aim is to understand the frequency of 90 in 620462.

Moving on to step 1:
6 divided by 90 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 90

Advancing to step 2:
When dividing 62 by 90, we get 0 with a remainder of 62.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 62, we get 62.
Include the next digit (0) from the dividend after 62, then repeat: 620 / 90

Advancing to step 3:
If we divide 620 by 90, we get 6 and a remainder of 80.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtract 540 from 620 to get 80.
Include the next digit (4) from the dividend after 80, then repeat: 804 / 90

Advancing to step 4:
When dividing 804 by 90, we get 8 with a remainder of 84.
Write down 8 as next digit of the result. 
Result so far: 68.0
Subtracting 720 from 804 leaves us with 84.
Fetch the next digit (6) from the dividend, attach it to 84 and continue: 846 / 90

Moving on to step 5:
846 divided by 90 is 9 with a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 689.0
Deduct 810 from 846 and we're left with 36.
Include the next digit (2) from the dividend after 36, then repeat: 362 / 90

Step 6:
The number 90 fits into 362 4 times, leaving a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 6894.0
If we take 360 away from 362, 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.

Going ahead to step 7:
90 can be fit into 20 0 times, resulting in a remainder of 20.
The next digit of our result is 0. 
Result so far: 6894.0
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
90 goes into 200 2 times with a remainder of 20.
The next digit of our result is 2. 
Result so far: 6894.02
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
90 goes into 200 2 times with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 6894.022
If we take 180 away from 200, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 6894.022 with a balance of 0.002.