We look at the division of 12686990 by 380 
The aim is to understand the frequency of 380 in 12686990.

Moving on to step 1:
If we divide 1 by 380, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 380

Moving on to step 2:
If we divide 12 by 380, we get 0 and a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Grab the next digit (6) from the dividend, add it to 12, then carry on: 126 / 380

Going ahead to step 3:
The number 380 fits into 126 0 times, leaving a remainder of 126.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 126 to get 126.
Bring next digit (8) of the dividend behind the 126 and repeat the process: 1268 / 380

On to step 4:
If we divide 1268 by 380, we get 3 and a remainder of 128.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 1140 from 1268 and we're left with 128.
Include the next digit (6) from the dividend after 128, then repeat: 1286 / 380

Step 5:
1286 divided by 380 is 3 with a remainder of 146.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
The remainder is 146 after subtracting 1140 from 1286.
Grab the next digit (9) from the dividend, add it to 146, then carry on: 1469 / 380

Advancing to step 6:
When dividing 1469 by 380, we get 3 with a remainder of 329.
The number 3 becomes the next digit in our result. 
Result so far: 333.0
The remainder is 329 after subtracting 1140 from 1469.
Take the next digit (9) from the dividend and append it to 329, then repeat: 3299 / 380

Let's proceed to step 7:
380 can be fit into 3299 8 times, resulting in a remainder of 259.
Use 8 as the next digit of our solution. 
Result so far: 3338.0
If we take 3040 away from 3299, we end up with 259.
Bring next digit (0) of the dividend behind the 259 and repeat the process: 2590 / 380

Moving on to step 8:
2590 divided by 380 is 6 with a remainder of 310.
Write down 6 as next digit of the result. 
Result so far: 33386.0
Deduct 2280 from 2590 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 9:
When dividing 3100 by 380, we get 8 with a remainder of 60.
Use 8 as the next digit of our solution. 
Result so far: 33386.8
Deduct 3040 from 3100 and we're left with 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 10:
If we divide 600 by 380, we get 1 and a remainder of 220.
Write down 1 as next digit of the result. 
Result so far: 33386.81
If we subtract 380 from 600, we 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.

Step 11:
2200 divided by 380 is 5 with a remainder of 300.
Write down 5 as next digit of the result. 
Result so far: 33386.815
If we take 1900 away from 2200, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 12:
If we divide 3000 by 380, we get 7 and a remainder of 340.
The next digit of our result is 7. 
Result so far: 33386.8157
The remainder is 340 after subtracting 2660 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 13:
If we divide 3400 by 380, we get 8 and a remainder of 360.
Put 8 as the next digit of the answer. 
Result so far: 33386.81578
The remainder is 360 after subtracting 3040 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Moving on to step 14:
380 can be fit into 3600 9 times, resulting in a remainder of 180.
Put 9 as the next digit of the answer. 
Result so far: 33386.815789
If we take 3420 away from 3600, we end up 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.

Moving on to step 15:
380 can be fit into 1800 4 times, resulting in a remainder of 280.
Put 4 as the next digit of the answer. 
Result so far: 33386.8157894
If we subtract 1520 from 1800, we 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.

Moving on to step 16:
When dividing 2800 by 380, we get 7 with a remainder of 140.
The next digit of our result is 7. 
Result so far: 33386.81578947
Subtracting 2660 from 2800 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.

The final result is 33386.81578947 with a remainder of 1.4e-07.