We're dividing 28360140 by 351 
The aim is to understand the frequency of 351 in 28360140.

On to step 1:
351 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 351

Moving on to step 2:
When dividing 28 by 351, we get 0 with a remainder of 28.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Grab the next digit (3) from the dividend, add it to 28, then carry on: 283 / 351

Let's proceed to step 3:
If we divide 283 by 351, we get 0 and a remainder of 283.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 283 leaves us with 283.
Take the next digit (6) from the dividend and append it to 283, then repeat: 2836 / 351

Moving on to step 4:
When dividing 2836 by 351, we get 8 with a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 28 after subtracting 2808 from 2836.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 351

On to step 5:
When dividing 280 by 351, we get 0 with a remainder of 280.
Put 0 as the next digit of the answer. 
Result so far: 80.0
If we take 0 away from 280, we end up with 280.
Append the next digit (1) from the dividend to 280 and continue with: 2801 / 351

Going ahead to step 6:
2801 divided by 351 is 7 with a remainder of 344.
The next digit of our result is 7. 
Result so far: 807.0
Deduct 2457 from 2801 and we're left with 344.
Bring next digit (4) of the dividend behind the 344 and repeat the process: 3444 / 351

Step 7:
When dividing 3444 by 351, we get 9 with a remainder of 285.
Record the quotient 9 as the next digit in the result. 
Result so far: 8079.0
Subtracting 3159 from 3444 leaves us with 285.
Fetch the next digit (0) from the dividend, attach it to 285 and continue: 2850 / 351

Advancing to step 8:
When dividing 2850 by 351, we get 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 80798.0
Subtract 2808 from 2850 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 9:
The number 351 fits into 420 1 times, leaving a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 80798.1
Deduct 351 from 420 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 10:
351 goes into 690 1 times with a remainder of 339.
Use 1 as the next digit of our solution. 
Result so far: 80798.11
Deduct 351 from 690 and we're left with 339.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3390, and continue the process.

After the division, we end up with 80798.11 and a remainder of 0.339.