19956602 ÷ 490 
The aim is to understand the frequency of 490 in 19956602.

On to step 1:
1 divided by 490 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 490

Moving on to step 2:
If we divide 19 by 490, we get 0 and a remainder of 19.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 490

On to step 3:
490 goes into 199 0 times with a remainder of 199.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 199, we get 199.
Grab the next digit (5) from the dividend, add it to 199, then carry on: 1995 / 490

On to step 4:
490 can be fit into 1995 4 times, resulting in a remainder of 35.
The next digit of our result is 4. 
Result so far: 4.0
If we take 1960 away from 1995, we end up with 35.
Append the next digit (6) from the dividend to 35 and continue with: 356 / 490

On to step 5:
356 divided by 490 is 0 with a remainder of 356.
The next digit of our result is 0. 
Result so far: 40.0
If we take 0 away from 356, we end up with 356.
Grab the next digit (6) from the dividend, add it to 356, then carry on: 3566 / 490

Step 6:
3566 divided by 490 is 7 with a remainder of 136.
Record the quotient 7 as the next digit in the result. 
Result so far: 407.0
Subtracting 3430 from 3566 leaves us with 136.
Fetch the next digit (0) from the dividend, attach it to 136 and continue: 1360 / 490

Going ahead to step 7:
490 can be fit into 1360 2 times, resulting in a remainder of 380.
The number 2 becomes the next digit in our result. 
Result so far: 4072.0
Subtract 980 from 1360 to get 380.
Bring next digit (2) of the dividend behind the 380 and repeat the process: 3802 / 490

Moving on to step 8:
490 can be fit into 3802 7 times, resulting in a remainder of 372.
Put 7 as the next digit of the answer. 
Result so far: 40727.0
Subtract 3430 from 3802 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

On to step 9:
490 can be fit into 3720 7 times, resulting in a remainder of 290.
The number 7 becomes the next digit in our result. 
Result so far: 40727.7
Subtract 3430 from 3720 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 10:
490 goes into 2900 5 times with a remainder of 450.
The number 5 becomes the next digit in our result. 
Result so far: 40727.75
Subtracting 2450 from 2900 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Moving on to step 11:
490 goes into 4500 9 times with a remainder of 90.
The next digit of our result is 9. 
Result so far: 40727.759
Deduct 4410 from 4500 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 12:
900 divided by 490 is 1 with a remainder of 410.
Record the quotient 1 as the next digit in the result. 
Result so far: 40727.7591
The remainder is 410 after subtracting 490 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Advancing to step 13:
If we divide 4100 by 490, we get 8 and a remainder of 180.
Record the quotient 8 as the next digit in the result. 
Result so far: 40727.75918
Deduct 3920 from 4100 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 14:
490 can be fit into 1800 3 times, resulting in a remainder of 330.
The next digit of our result is 3. 
Result so far: 40727.759183
Deduct 1470 from 1800 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 15:
If we divide 3300 by 490, we get 6 and a remainder of 360.
The number 6 becomes the next digit in our result. 
Result so far: 40727.7591836
Subtracting 2940 from 3300 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 16:
If we divide 3600 by 490, we get 7 and a remainder of 170.
The next digit of our result is 7. 
Result so far: 40727.75918367
If we take 3430 away from 3600, we end up 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.

Our division results in 40727.75918367 with a remaining 1.7e-07.