We're dividing 77916804 by 310 
The aim is to understand the frequency of 310 in 77916804.

Let's proceed to step 1:
If we divide 7 by 310, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 310

Step 2:
310 goes into 77 0 times with 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 (9) from the dividend to 77 and continue with: 779 / 310

Step 3:
310 goes into 779 2 times with a remainder of 159.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 620 from 779 to get 159.
Take the next digit (1) from the dividend and append it to 159, then repeat: 1591 / 310

Advancing to step 4:
310 goes into 1591 5 times with a remainder of 41.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we take 1550 away from 1591, we end up with 41.
Take the next digit (6) from the dividend and append it to 41, then repeat: 416 / 310

Step 5:
310 goes into 416 1 times with a remainder of 106.
Use 1 as the next digit of our solution. 
Result so far: 251.0
If we subtract 310 from 416, we get 106.
Fetch the next digit (8) from the dividend, attach it to 106 and continue: 1068 / 310

Step 6:
1068 divided by 310 is 3 with a remainder of 138.
The number 3 becomes the next digit in our result. 
Result so far: 2513.0
Deduct 930 from 1068 and we're left with 138.
Bring next digit (0) of the dividend behind the 138 and repeat the process: 1380 / 310

Advancing to step 7:
The number 310 fits into 1380 4 times, leaving a remainder of 140.
Put 4 as the next digit of the answer. 
Result so far: 25134.0
Deduct 1240 from 1380 and we're left with 140.
Fetch the next digit (4) from the dividend, attach it to 140 and continue: 1404 / 310

Going ahead to step 8:
If we divide 1404 by 310, we get 4 and a remainder of 164.
Put 4 as the next digit of the answer. 
Result so far: 251344.0
If we subtract 1240 from 1404, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Moving on to step 9:
If we divide 1640 by 310, we get 5 and a remainder of 90.
Write down 5 as next digit of the result. 
Result so far: 251344.5
Subtracting 1550 from 1640 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 10:
The number 310 fits into 900 2 times, leaving a remainder of 280.
Record the quotient 2 as the next digit in the result. 
Result so far: 251344.52
Subtracting 620 from 900 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 11:
310 can be fit into 2800 9 times, resulting in a remainder of 10.
The next digit of our result is 9. 
Result so far: 251344.529
If we take 2790 away from 2800, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
310 goes into 100 0 times with a remainder of 100.
The next digit of our result is 0. 
Result so far: 251344.529
If we take 0 away from 100, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 13:
310 can be fit into 1000 3 times, resulting in a remainder of 70.
Put 3 as the next digit of the answer. 
Result so far: 251344.52903
Subtracting 930 from 1000 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 14:
If we divide 700 by 310, we get 2 and a remainder of 80.
Write down 2 as next digit of the result. 
Result so far: 251344.529032
The remainder is 80 after subtracting 620 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 15:
The number 310 fits into 800 2 times, leaving a remainder of 180.
Put 2 as the next digit of the answer. 
Result so far: 251344.5290322
Subtracting 620 from 800 leaves us 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.

After the division, we end up with 251344.5290322 and a remainder of 1.8e-06.