We look at the division of 30959339 by 861 
The aim is to understand the frequency of 861 in 30959339.

On to step 1:
The number 861 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 861

Step 2:
861 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 861

On to step 3:
861 goes into 309 0 times with a remainder of 309.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 309 after subtracting 0 from 309.
Fetch the next digit (5) from the dividend, attach it to 309 and continue: 3095 / 861

Let's proceed to step 4:
861 can be fit into 3095 3 times, resulting in a remainder of 512.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 2583 from 3095 to get 512.
Take the next digit (9) from the dividend and append it to 512, then repeat: 5129 / 861

Advancing to step 5:
The number 861 fits into 5129 5 times, leaving a remainder of 824.
Use 5 as the next digit of our solution. 
Result so far: 35.0
The remainder is 824 after subtracting 4305 from 5129.
Bring next digit (3) of the dividend behind the 824 and repeat the process: 8243 / 861

Step 6:
861 can be fit into 8243 9 times, resulting in a remainder of 494.
Record the quotient 9 as the next digit in the result. 
Result so far: 359.0
Subtract 7749 from 8243 to get 494.
Fetch the next digit (3) from the dividend, attach it to 494 and continue: 4943 / 861

Step 7:
When dividing 4943 by 861, we get 5 with a remainder of 638.
Use 5 as the next digit of our solution. 
Result so far: 3595.0
Subtracting 4305 from 4943 leaves us with 638.
Append the next digit (9) from the dividend to 638 and continue with: 6389 / 861

Moving on to step 8:
861 can be fit into 6389 7 times, resulting in a remainder of 362.
Write down 7 as next digit of the result. 
Result so far: 35957.0
Subtracting 6027 from 6389 leaves us with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Moving on to step 9:
The number 861 fits into 3620 4 times, leaving a remainder of 176.
The next digit of our result is 4. 
Result so far: 35957.4
Subtracting 3444 from 3620 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Let's proceed to step 10:
861 goes into 1760 2 times with a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 35957.42
If we subtract 1722 from 1760, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 11:
861 can be fit into 380 0 times, resulting in a remainder of 380.
Put 0 as the next digit of the answer. 
Result so far: 35957.42
Subtracting 0 from 380 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 12:
The number 861 fits into 3800 4 times, leaving a remainder of 356.
The next digit of our result is 4. 
Result so far: 35957.4204
If we take 3444 away from 3800, we end up with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Let's proceed to step 13:
The number 861 fits into 3560 4 times, leaving a remainder of 116.
Use 4 as the next digit of our solution. 
Result so far: 35957.42044
Subtract 3444 from 3560 to get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

The quotient of the division is 35957.42044, and the remainder is 0.000116.