12380641 divided by 490 
The aim is to understand the frequency of 490 in 12380641.

Step 1:
490 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 490

On to step 2:
490 can be fit into 12 0 times, resulting in a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 490

Moving on to step 3:
490 goes into 123 0 times with a remainder of 123.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 123, we get 123.
Grab the next digit (8) from the dividend, add it to 123, then carry on: 1238 / 490

Advancing to step 4:
If we divide 1238 by 490, we get 2 and a remainder of 258.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 980 from 1238 to get 258.
Bring next digit (0) of the dividend behind the 258 and repeat the process: 2580 / 490

Advancing to step 5:
If we divide 2580 by 490, we get 5 and a remainder of 130.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Subtract 2450 from 2580 to get 130.
Bring next digit (6) of the dividend behind the 130 and repeat the process: 1306 / 490

On to step 6:
If we divide 1306 by 490, we get 2 and a remainder of 326.
The number 2 becomes the next digit in our result. 
Result so far: 252.0
If we take 980 away from 1306, we end up with 326.
Grab the next digit (4) from the dividend, add it to 326, then carry on: 3264 / 490

Step 7:
The number 490 fits into 3264 6 times, leaving a remainder of 324.
Put 6 as the next digit of the answer. 
Result so far: 2526.0
If we subtract 2940 from 3264, we get 324.
Grab the next digit (1) from the dividend, add it to 324, then carry on: 3241 / 490

Moving on to step 8:
The number 490 fits into 3241 6 times, leaving a remainder of 301.
Put 6 as the next digit of the answer. 
Result so far: 25266.0
If we take 2940 away from 3241, we end up with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Going ahead to step 9:
When dividing 3010 by 490, we get 6 with a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 25266.6
Subtracting 2940 from 3010 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
490 goes into 700 1 times with a remainder of 210.
Record the quotient 1 as the next digit in the result. 
Result so far: 25266.61
Deduct 490 from 700 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 11:
2100 divided by 490 is 4 with a remainder of 140.
Use 4 as the next digit of our solution. 
Result so far: 25266.614
Subtracting 1960 from 2100 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 12:
If we divide 1400 by 490, we get 2 and a remainder of 420.
The number 2 becomes the next digit in our result. 
Result so far: 25266.6142
Subtracting 980 from 1400 leaves us with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

On to step 13:
490 can be fit into 4200 8 times, resulting in a remainder of 280.
Use 8 as the next digit of our solution. 
Result so far: 25266.61428
Subtract 3920 from 4200 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 14:
490 goes into 2800 5 times with a remainder of 350.
Put 5 as the next digit of the answer. 
Result so far: 25266.614285
If we subtract 2450 from 2800, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Moving on to step 15:
3500 divided by 490 is 7 with a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 25266.6142857
If we take 3430 away from 3500, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 16:
490 goes into 700 1 times with a remainder of 210.
The next digit of our result is 1. 
Result so far: 25266.61428571
The remainder is 210 after subtracting 490 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

After the division, we end up with 25266.61428571 and a remainder of 2.1e-07.