Let's divide 4093290 by 490
The aim is to understand the frequency of 490 in 4093290.

On to step 1:
The number 490 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 490

On to step 2:
The number 490 fits into 40 0 times, leaving a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Grab the next digit (9) from the dividend, add it to 40, then carry on: 409 / 490

Going ahead to step 3:
The number 490 fits into 409 0 times, leaving a remainder of 409.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 409 to get 409.
Append the next digit (3) from the dividend to 409 and continue with: 4093 / 490

Moving on to step 4:
4093 divided by 490 is 8 with a remainder of 173.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we take 3920 away from 4093, we end up with 173.
Bring next digit (2) of the dividend behind the 173 and repeat the process: 1732 / 490

Advancing to step 5:
When dividing 1732 by 490, we get 3 with a remainder of 262.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
If we subtract 1470 from 1732, we get 262.
Grab the next digit (9) from the dividend, add it to 262, then carry on: 2629 / 490

Going ahead to step 6:
490 goes into 2629 5 times with a remainder of 179.
Record the quotient 5 as the next digit in the result. 
Result so far: 835.0
If we subtract 2450 from 2629, we get 179.
Fetch the next digit (0) from the dividend, attach it to 179 and continue: 1790 / 490

On to step 7:
1790 divided by 490 is 3 with a remainder of 320.
The next digit of our result is 3. 
Result so far: 8353.0
Subtract 1470 from 1790 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.

Step 8:
The number 490 fits into 3200 6 times, leaving a remainder of 260.
Record the quotient 6 as the next digit in the result. 
Result so far: 8353.6
Subtract 2940 from 3200 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 9:
When dividing 2600 by 490, we get 5 with a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 8353.65
If we take 2450 away from 2600, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Going ahead to step 10:
If we divide 1500 by 490, we get 3 and a remainder of 30.
The number 3 becomes the next digit in our result. 
Result so far: 8353.653
Deduct 1470 from 1500 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 11:
When dividing 300 by 490, we get 0 with a remainder of 300.
The number 0 becomes the next digit in our result. 
Result so far: 8353.653
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 12:
The number 490 fits into 3000 6 times, leaving a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 8353.65306
If we subtract 2940 from 3000, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 13:
If we divide 600 by 490, we get 1 and a remainder of 110.
Put 1 as the next digit of the answer. 
Result so far: 8353.653061
The remainder is 110 after subtracting 490 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 14:
If we divide 1100 by 490, we get 2 and a remainder of 120.
The number 2 becomes the next digit in our result. 
Result so far: 8353.6530612
The remainder is 120 after subtracting 980 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 15:
1200 divided by 490 is 2 with a remainder of 220.
The number 2 becomes the next digit in our result. 
Result so far: 8353.65306122
Subtract 980 from 1200 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Our division results in 8353.65306122 with a remaining 2.2e-07.