7740311 divided by 861 
The aim is to understand the frequency of 861 in 7740311.

Advancing to step 1:
7 divided by 861 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 861

Moving on to step 2:
The number 861 fits into 77 0 times, leaving a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Append the next digit (4) from the dividend to 77 and continue with: 774 / 861

On to step 3:
When dividing 774 by 861, we get 0 with a remainder of 774.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 774, we get 774.
Append the next digit (0) from the dividend to 774 and continue with: 7740 / 861

Moving on to step 4:
7740 divided by 861 is 8 with a remainder of 852.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 6888 from 7740 to get 852.
Include the next digit (3) from the dividend after 852, then repeat: 8523 / 861

Advancing to step 5:
861 goes into 8523 9 times with a remainder of 774.
Write down 9 as next digit of the result. 
Result so far: 89.0
If we take 7749 away from 8523, we end up with 774.
Fetch the next digit (1) from the dividend, attach it to 774 and continue: 7741 / 861

Advancing to step 6:
7741 divided by 861 is 8 with a remainder of 853.
The number 8 becomes the next digit in our result. 
Result so far: 898.0
Deduct 6888 from 7741 and we're left with 853.
Append the next digit (1) from the dividend to 853 and continue with: 8531 / 861

Step 7:
If we divide 8531 by 861, we get 9 and a remainder of 782.
Use 9 as the next digit of our solution. 
Result so far: 8989.0
If we take 7749 away from 8531, we end up with 782.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7820, and continue the process.

Advancing to step 8:
7820 divided by 861 is 9 with a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 8989.9
Subtracting 7749 from 7820 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 9:
861 can be fit into 710 0 times, resulting in a remainder of 710.
Write down 0 as next digit of the result. 
Result so far: 8989.9
If we subtract 0 from 710, we get 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Step 10:
When dividing 7100 by 861, we get 8 with a remainder of 212.
The number 8 becomes the next digit in our result. 
Result so far: 8989.908
Subtracting 6888 from 7100 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Advancing to step 11:
When dividing 2120 by 861, we get 2 with a remainder of 398.
Record the quotient 2 as the next digit in the result. 
Result so far: 8989.9082
The remainder is 398 after subtracting 1722 from 2120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Let's proceed to step 12:
861 goes into 3980 4 times with a remainder of 536.
Put 4 as the next digit of the answer. 
Result so far: 8989.90824
The remainder is 536 after subtracting 3444 from 3980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Step 13:
5360 divided by 861 is 6 with a remainder of 194.
The next digit of our result is 6. 
Result so far: 8989.908246
If we take 5166 away from 5360, we end up with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Step 14:
The number 861 fits into 1940 2 times, leaving a remainder of 218.
Use 2 as the next digit of our solution. 
Result so far: 8989.9082462
Subtracting 1722 from 1940 leaves us with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Step 15:
If we divide 2180 by 861, we get 2 and a remainder of 458.
The next digit of our result is 2. 
Result so far: 8989.90824622
Subtract 1722 from 2180 to get 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

In conclusion, the division gives 8989.90824622 with a balance of 4.58e-07.