90210638 divided by 440 
The aim is to understand the frequency of 440 in 90210638.

Moving on to step 1:
9 divided by 440 is 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 440

Going ahead to step 2:
440 can be fit into 90 0 times, resulting in a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Append the next digit (2) from the dividend to 90 and continue with: 902 / 440

Step 3:
If we divide 902 by 440, we get 2 and a remainder of 22.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 880 from 902 leaves us with 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 440

Advancing to step 4:
The number 440 fits into 221 0 times, leaving a remainder of 221.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Deduct 0 from 221 and we're left with 221.
Fetch the next digit (0) from the dividend, attach it to 221 and continue: 2210 / 440

Going ahead to step 5:
440 goes into 2210 5 times with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 205.0
Subtracting 2200 from 2210 leaves us with 10.
Bring next digit (6) of the dividend behind the 10 and repeat the process: 106 / 440

On to step 6:
The number 440 fits into 106 0 times, leaving a remainder of 106.
The next digit of our result is 0. 
Result so far: 2050.0
Subtracting 0 from 106 leaves us with 106.
Take the next digit (3) from the dividend and append it to 106, then repeat: 1063 / 440

On to step 7:
The number 440 fits into 1063 2 times, leaving a remainder of 183.
The number 2 becomes the next digit in our result. 
Result so far: 20502.0
The remainder is 183 after subtracting 880 from 1063.
Bring next digit (8) of the dividend behind the 183 and repeat the process: 1838 / 440

Advancing to step 8:
If we divide 1838 by 440, we get 4 and a remainder of 78.
The next digit of our result is 4. 
Result so far: 205024.0
Subtracting 1760 from 1838 leaves us with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 9:
780 divided by 440 is 1 with a remainder of 340.
The next digit of our result is 1. 
Result so far: 205024.1
Subtract 440 from 780 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Advancing to step 10:
The number 440 fits into 3400 7 times, leaving a remainder of 320.
Record the quotient 7 as the next digit in the result. 
Result so far: 205024.17
Subtract 3080 from 3400 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 11:
3200 divided by 440 is 7 with a remainder of 120.
Record the quotient 7 as the next digit in the result. 
Result so far: 205024.177
Subtract 3080 from 3200 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

After the division, we end up with 205024.177 and a remainder of 0.012.