Let's divide 858315 by 77
The aim is to understand the frequency of 77 in 858315.

Advancing to step 1:
The number 77 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 77

Let's proceed to step 2:
77 can be fit into 85 1 times, resulting in a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 77 from 85 and we're left with 8.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 77

Moving on to step 3:
The number 77 fits into 88 1 times, leaving a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 11 after subtracting 77 from 88.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 77

Advancing to step 4:
When dividing 113 by 77, we get 1 with a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 111.0
Deduct 77 from 113 and we're left with 36.
Bring next digit (1) of the dividend behind the 36 and repeat the process: 361 / 77

Going ahead to step 5:
If we divide 361 by 77, we get 4 and a remainder of 53.
Put 4 as the next digit of the answer. 
Result so far: 1114.0
The remainder is 53 after subtracting 308 from 361.
Take the next digit (5) from the dividend and append it to 53, then repeat: 535 / 77

Step 6:
The number 77 fits into 535 6 times, leaving a remainder of 73.
Put 6 as the next digit of the answer. 
Result so far: 11146.0
Subtracting 462 from 535 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 7:
The number 77 fits into 730 9 times, leaving a remainder of 37.
Write down 9 as next digit of the result. 
Result so far: 11146.9
Subtract 693 from 730 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 8:
77 goes into 370 4 times with a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 11146.94
Deduct 308 from 370 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 9:
When dividing 620 by 77, we get 8 with a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 11146.948
Subtracting 616 from 620 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 10:
When dividing 40 by 77, we get 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 11146.948
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
When dividing 400 by 77, we get 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 11146.94805
The remainder is 15 after subtracting 385 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 12:
150 divided by 77 is 1 with a remainder of 73.
Use 1 as the next digit of our solution. 
Result so far: 11146.948051
Subtracting 77 from 150 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 13:
If we divide 730 by 77, we get 9 and a remainder of 37.
Put 9 as the next digit of the answer. 
Result so far: 11146.9480519
If we take 693 away from 730, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 14:
370 divided by 77 is 4 with a remainder of 62.
The next digit of our result is 4. 
Result so far: 11146.94805194
If we take 308 away from 370, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Our division results in 11146.94805194 with a remaining 6.2e-08.