We look at the division of 43380379 by 856 
The aim is to understand the frequency of 856 in 43380379.

On to step 1:
856 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 856

Going ahead to step 2:
856 can be fit into 43 0 times, resulting in a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Bring next digit (3) of the dividend behind the 43 and repeat the process: 433 / 856

Going ahead to step 3:
856 goes into 433 0 times with a remainder of 433.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 433 after subtracting 0 from 433.
Take the next digit (8) from the dividend and append it to 433, then repeat: 4338 / 856

Advancing to step 4:
The number 856 fits into 4338 5 times, leaving a remainder of 58.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 4280 from 4338 and we're left with 58.
Take the next digit (0) from the dividend and append it to 58, then repeat: 580 / 856

Advancing to step 5:
580 divided by 856 is 0 with a remainder of 580.
Put 0 as the next digit of the answer. 
Result so far: 50.0
Subtract 0 from 580 to get 580.
Append the next digit (3) from the dividend to 580 and continue with: 5803 / 856

Let's proceed to step 6:
When dividing 5803 by 856, we get 6 with a remainder of 667.
Use 6 as the next digit of our solution. 
Result so far: 506.0
The remainder is 667 after subtracting 5136 from 5803.
Append the next digit (7) from the dividend to 667 and continue with: 6677 / 856

Advancing to step 7:
856 goes into 6677 7 times with a remainder of 685.
The number 7 becomes the next digit in our result. 
Result so far: 5067.0
Subtracting 5992 from 6677 leaves us with 685.
Grab the next digit (9) from the dividend, add it to 685, then carry on: 6859 / 856

Step 8:
The number 856 fits into 6859 8 times, leaving a remainder of 11.
Record the quotient 8 as the next digit in the result. 
Result so far: 50678.0
If we take 6848 away from 6859, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 9:
110 divided by 856 is 0 with a remainder of 110.
Put 0 as the next digit of the answer. 
Result so far: 50678.0
If we take 0 away from 110, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 10:
If we divide 1100 by 856, we get 1 and a remainder of 244.
Record the quotient 1 as the next digit in the result. 
Result so far: 50678.01
Subtract 856 from 1100 to get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 11:
2440 divided by 856 is 2 with a remainder of 728.
The next digit of our result is 2. 
Result so far: 50678.012
If we subtract 1712 from 2440, we get 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Going ahead to step 12:
The number 856 fits into 7280 8 times, leaving a remainder of 432.
Write down 8 as next digit of the result. 
Result so far: 50678.0128
If we subtract 6848 from 7280, we get 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Advancing to step 13:
856 can be fit into 4320 5 times, resulting in a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 50678.01285
If we subtract 4280 from 4320, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 14:
400 divided by 856 is 0 with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 50678.01285
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 15:
856 can be fit into 4000 4 times, resulting in a remainder of 576.
Record the quotient 4 as the next digit in the result. 
Result so far: 50678.0128504
If we take 3424 away from 4000, we end up with 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Advancing to step 16:
856 goes into 5760 6 times with a remainder of 624.
The number 6 becomes the next digit in our result. 
Result so far: 50678.01285046
If we subtract 5136 from 5760, we get 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

The final outcome is 50678.01285046, with a leftover of 6.24e-07.