We're dividing 30341287 by 770 
The aim is to understand the frequency of 770 in 30341287.

On to step 1:
770 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 770

Advancing to step 2:
When dividing 30 by 770, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 770

Advancing to step 3:
770 goes into 303 0 times with a remainder of 303.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 303 and we're left with 303.
Append the next digit (4) from the dividend to 303 and continue with: 3034 / 770

Going ahead to step 4:
3034 divided by 770 is 3 with a remainder of 724.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 2310 from 3034 and we're left with 724.
Bring next digit (1) of the dividend behind the 724 and repeat the process: 7241 / 770

Going ahead to step 5:
7241 divided by 770 is 9 with a remainder of 311.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Subtract 6930 from 7241 to get 311.
Include the next digit (2) from the dividend after 311, then repeat: 3112 / 770

Step 6:
3112 divided by 770 is 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 394.0
The remainder is 32 after subtracting 3080 from 3112.
Append the next digit (8) from the dividend to 32 and continue with: 328 / 770

On to step 7:
770 can be fit into 328 0 times, resulting in a remainder of 328.
Put 0 as the next digit of the answer. 
Result so far: 3940.0
Subtracting 0 from 328 leaves us with 328.
Append the next digit (7) from the dividend to 328 and continue with: 3287 / 770

On to step 8:
3287 divided by 770 is 4 with a remainder of 207.
Write down 4 as next digit of the result. 
Result so far: 39404.0
Subtract 3080 from 3287 to get 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Moving on to step 9:
770 goes into 2070 2 times with a remainder of 530.
Record the quotient 2 as the next digit in the result. 
Result so far: 39404.2
If we subtract 1540 from 2070, we get 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Step 10:
5300 divided by 770 is 6 with a remainder of 680.
Record the quotient 6 as the next digit in the result. 
Result so far: 39404.26
If we subtract 4620 from 5300, we get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Step 11:
770 can be fit into 6800 8 times, resulting in a remainder of 640.
The number 8 becomes the next digit in our result. 
Result so far: 39404.268
Deduct 6160 from 6800 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 12:
6400 divided by 770 is 8 with a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 39404.2688
If we subtract 6160 from 6400, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

After the division, we end up with 39404.2688 and a remainder of 0.0024.