Let's divide 377204 by 90
The aim is to understand the frequency of 90 in 377204.

Advancing to step 1:
3 divided by 90 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 90

Moving on to step 2:
90 can be fit into 37 0 times, resulting in a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 37, we get 37.
Include the next digit (7) from the dividend after 37, then repeat: 377 / 90

Moving on to step 3:
If we divide 377 by 90, we get 4 and a remainder of 17.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 17 after subtracting 360 from 377.
Append the next digit (2) from the dividend to 17 and continue with: 172 / 90

On to step 4:
When dividing 172 by 90, we get 1 with a remainder of 82.
Put 1 as the next digit of the answer. 
Result so far: 41.0
If we subtract 90 from 172, we get 82.
Take the next digit (0) from the dividend and append it to 82, then repeat: 820 / 90

On to step 5:
90 can be fit into 820 9 times, resulting in a remainder of 10.
The next digit of our result is 9. 
Result so far: 419.0
If we take 810 away from 820, we end up with 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 90

Going ahead to step 6:
104 divided by 90 is 1 with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 4191.0
If we subtract 90 from 104, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 7:
140 divided by 90 is 1 with a remainder of 50.
Write down 1 as next digit of the result. 
Result so far: 4191.1
Subtract 90 from 140 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
90 can be fit into 500 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 4191.15
If we take 450 away from 500, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
The number 90 fits into 500 5 times, leaving a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 4191.155
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The quotient of the division is 4191.155, and the remainder is 0.005.