90523668 ÷ 214 
The aim is to understand the frequency of 214 in 90523668.

Going ahead to step 1:
The number 214 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 214

Step 2:
If we divide 90 by 214, we get 0 and a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Bring next digit (5) of the dividend behind the 90 and repeat the process: 905 / 214

Let's proceed to step 3:
905 divided by 214 is 4 with a remainder of 49.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 856 away from 905, we end up with 49.
Append the next digit (2) from the dividend to 49 and continue with: 492 / 214

Moving on to step 4:
When dividing 492 by 214, we get 2 with a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we subtract 428 from 492, we get 64.
Bring next digit (3) of the dividend behind the 64 and repeat the process: 643 / 214

Advancing to step 5:
214 goes into 643 3 times with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 423.0
If we take 642 away from 643, we end up with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 214

On to step 6:
214 goes into 16 0 times with a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 4230.0
Subtracting 0 from 16 leaves us with 16.
Bring next digit (6) of the dividend behind the 16 and repeat the process: 166 / 214

Advancing to step 7:
If we divide 166 by 214, we get 0 and a remainder of 166.
Record the quotient 0 as the next digit in the result. 
Result so far: 42300.0
Subtracting 0 from 166 leaves us with 166.
Fetch the next digit (8) from the dividend, attach it to 166 and continue: 1668 / 214

Let's proceed to step 8:
1668 divided by 214 is 7 with a remainder of 170.
Record the quotient 7 as the next digit in the result. 
Result so far: 423007.0
Deduct 1498 from 1668 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 9:
214 can be fit into 1700 7 times, resulting in a remainder of 202.
The number 7 becomes the next digit in our result. 
Result so far: 423007.7
If we take 1498 away from 1700, we end up with 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Going ahead to step 10:
214 can be fit into 2020 9 times, resulting in a remainder of 94.
The next digit of our result is 9. 
Result so far: 423007.79
Subtracting 1926 from 2020 leaves us with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 11:
The number 214 fits into 940 4 times, leaving a remainder of 84.
The number 4 becomes the next digit in our result. 
Result so far: 423007.794
Deduct 856 from 940 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 12:
214 goes into 840 3 times with a remainder of 198.
Write down 3 as next digit of the result. 
Result so far: 423007.7943
Deduct 642 from 840 and we're left with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Step 13:
214 can be fit into 1980 9 times, resulting in a remainder of 54.
The next digit of our result is 9. 
Result so far: 423007.79439
If we subtract 1926 from 1980, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 14:
If we divide 540 by 214, we get 2 and a remainder of 112.
Write down 2 as next digit of the result. 
Result so far: 423007.794392
Deduct 428 from 540 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 15:
214 goes into 1120 5 times with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 423007.7943925
Subtracting 1070 from 1120 leaves us 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.

Moving on to step 16:
If we divide 500 by 214, we get 2 and a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 423007.79439252
The remainder is 72 after subtracting 428 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final result is 423007.79439252 with a remainder of 7.2e-08.