We're dividing 90215876 by 608 
The aim is to understand the frequency of 608 in 90215876.

Step 1:
The number 608 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 608

On to step 2:
608 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Bring next digit (2) of the dividend behind the 90 and repeat the process: 902 / 608

Moving on to step 3:
The number 608 fits into 902 1 times, leaving a remainder of 294.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 608 from 902, we get 294.
Take the next digit (1) from the dividend and append it to 294, then repeat: 2941 / 608

On to step 4:
608 can be fit into 2941 4 times, resulting in a remainder of 509.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2432 from 2941, we get 509.
Append the next digit (5) from the dividend to 509 and continue with: 5095 / 608

On to step 5:
When dividing 5095 by 608, we get 8 with a remainder of 231.
Use 8 as the next digit of our solution. 
Result so far: 148.0
The remainder is 231 after subtracting 4864 from 5095.
Append the next digit (8) from the dividend to 231 and continue with: 2318 / 608

Going ahead to step 6:
2318 divided by 608 is 3 with a remainder of 494.
Use 3 as the next digit of our solution. 
Result so far: 1483.0
Subtract 1824 from 2318 to get 494.
Take the next digit (7) from the dividend and append it to 494, then repeat: 4947 / 608

Moving on to step 7:
608 goes into 4947 8 times with a remainder of 83.
The number 8 becomes the next digit in our result. 
Result so far: 14838.0
The remainder is 83 after subtracting 4864 from 4947.
Take the next digit (6) from the dividend and append it to 83, then repeat: 836 / 608

On to step 8:
608 goes into 836 1 times with a remainder of 228.
The number 1 becomes the next digit in our result. 
Result so far: 148381.0
The remainder is 228 after subtracting 608 from 836.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Step 9:
If we divide 2280 by 608, we get 3 and a remainder of 456.
Use 3 as the next digit of our solution. 
Result so far: 148381.3
If we take 1824 away from 2280, we end up with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Going ahead to step 10:
When dividing 4560 by 608, we get 7 with a remainder of 304.
Record the quotient 7 as the next digit in the result. 
Result so far: 148381.37
Subtracting 4256 from 4560 leaves us with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Advancing to step 11:
608 can be fit into 3040 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 148381.375
Subtract 3040 from 3040 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 12:
608 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 148381.375
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 13:
608 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 148381.375
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 148381.375 with a remainder of 0.0.