We look at the division of 851471 by 77 
The aim is to understand the frequency of 77 in 851471.

Let's proceed to step 1:
77 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 77

Let's proceed to step 2:
77 can be fit into 85 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 77 from 85, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 77

On to step 3:
If we divide 81 by 77, we get 1 and a remainder of 4.
The next digit of our result is 1. 
Result so far: 11.0
Deduct 77 from 81 and we're left with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 77

Step 4:
The number 77 fits into 44 0 times, leaving a remainder of 44.
Use 0 as the next digit of our solution. 
Result so far: 110.0
Subtracting 0 from 44 leaves us with 44.
Grab the next digit (7) from the dividend, add it to 44, then carry on: 447 / 77

Moving on to step 5:
If we divide 447 by 77, we get 5 and a remainder of 62.
The next digit of our result is 5. 
Result so far: 1105.0
Subtracting 385 from 447 leaves us with 62.
Grab the next digit (1) from the dividend, add it to 62, then carry on: 621 / 77

Advancing to step 6:
When dividing 621 by 77, we get 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 11058.0
Deduct 616 from 621 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
50 divided by 77 is 0 with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 11058.0
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
The number 77 fits into 500 6 times, leaving a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 11058.06
Subtract 462 from 500 to 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.

Let's proceed to step 9:
77 goes into 380 4 times with a remainder of 72.
The next digit of our result is 4. 
Result so far: 11058.064
If we subtract 308 from 380, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 10:
When dividing 720 by 77, we get 9 with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 11058.0649
Deduct 693 from 720 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 11:
The number 77 fits into 270 3 times, leaving a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 11058.06493
If we take 231 away from 270, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 12:
When dividing 390 by 77, we get 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 11058.064935
If we subtract 385 from 390, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 13:
The number 77 fits into 50 0 times, leaving a remainder of 50.
The next digit of our result is 0. 
Result so far: 11058.064935
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 14:
500 divided by 77 is 6 with a remainder of 38.
Put 6 as the next digit of the answer. 
Result so far: 11058.06493506
Deduct 462 from 500 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 11058.06493506 with a remaining 3.8e-08.